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How to scan and diagnose hardware issues on your mac with apple’s built-in tools

Apple gives you a number of options if you need to troubleshoot software and hardware issues that might be plaguing your Mac. If you cannot determine the root cause of your problem by isolating issues in macOS, your first port of call should be macOS’ built-in recovery tools.

But that may not be necessarily enough and Recovery Mode may be unable to help you get your Mac back to working order.

As the last option, you can boot your Mac in a hardware diagnostics mode, which on newer Macs is called Apple Diagnostics or Apple Hardware Test on older models. In this tutorial, we’ll show you how to enter Apple Diagnostics or Apple Hardware Test mode to identify the potential source of a hardware issue.

Apple Diagnostics or Apple Hardware Test mode?

Apple Diagnostics and Apple Hardware Test mode can help determine which hardware component may be causing the issue on your computer, and provide first steps to try and resolve it.

On Mac computers introduced before June 2013, you will use Apple Hardware Test, an older version of Apple Diagnostics mode. Macs introduced after June 2013 will use Apple Diagnostics mode instead.

If your Mac’s hard drive or flash storage lacks Apple Diagnostics or Apple Hardware Test, your computer will load their Internet-based counterparts provided your Mac is connected to the Internet via Ethernet or Wi-Fi.

There’s no functional difference between local and Internet-based versions of Apple Diagnostics and Apple Hardware Test modes.

Booting Apple Hardware Test from macOS install disc

Older Macs with OS X Lion 10.7 and earlier that don’t have Apple Hardware Test on the startup disk can boot this feature from the Applications Install Disc 2 or the MacBook Air Software Reinstall Drive which shipped with late-200 MacBook Airs.

Just insert the disc that came with your Mac into its built-in optical drive or an external Superdrive (owners of the late-2010 MacBook Air model will insert the MacBook Air Software Reinstall Drive into a USB port) before following the steps outlined further below in this article.

How to start up your Mac in Apple Diagnostics or Apple Hardware Test mode

If you have a Mac notebook, double-check that the computer is connected to the power adapter to prevent it from shutting down during testing. Additionally, unplug all external devices, including USB thumb drives and external storage devices, from your Mac except the keyboard, mouse, display and Ethernet adapter.

If you have an Internet connection, Apple Hardware Test or Apple Diagnostics will upload results to Apple and recommend support resources on the company’s support website which are related to the detected issues.

1) Select Shut Down in the Apple menu to turn off your Mac.

2) Press the power button to turn on the computer.

3) Immediately press and hold the D key on the built-in keyboard until Apple Hardware Test or Apple Diagnostics begins inspecting your hardware configuration, which may take a minute or so.

How to scan and diagnose hardware issues on your mac with apple’s built-in tools

Tip: To start Apple Diagnostics or Apple Hardware Test over the Internet, press the Option (⌥) – D key combination.

4) Now select your desired language for Apple Diagnostics or Apple Hardware Test and click the right arrow, or press the Return key.

How to scan and diagnose hardware issues on your mac with apple’s built-in tools

5) Choose which sort of tests you wish to perform. You can perform basic tests by clicking the Test button, or run a barrage of detailed diagnostic test by ticking the box next to “Perform extended testing” and then hitting the Test button.

6) Test results will appear after a few minutes. As the tests are performed, your Mac notebook’s fan may kick into overdrive. If there’s something wrong with your computer, you’ll get a brief description along with a reference code.

How to scan and diagnose hardware issues on your mac with apple’s built-in tools

If no issues are found, a “No issues found” message appears. Apple Diagnostics reference codes are explained in the last section.

7) To exit Apple Diagnostics or Apple Hardware Test mode, click Restart or Shut Down button.

Steps to take if an issue has been detected

If you Mac is connected to the Internet via Ethernet or Wi-Fi and an issue has been detected, you will be offered to get support articles from Apple. To determine your support and service options relating to any issue, you must click the Get Started link or press the Command (⌘) – G keystroke.

Doing so will reboot your Mac in OS X Recovery Mode which will let you access your support and service options through Safari and see additional troubleshooting steps and information to help resolve your issue.

How to scan and diagnose hardware issues on your mac with apple’s built-in tools

After choosing your country, click the Agree to send link to send your Mac’s serial number and reference codes to Apple.

Keyboard shortcuts in Apple Diagnostics and Apple Hardware Test

You can use the following keyboard shortcuts to enter Apple Diagnostics or Apple Hardware Test and select its features.

  • D at boot time—Start Apple Diagnostics or Apple Hardware Test
  • Option (⌥) – D at boot time—Start Apple Diagnostics or Apple Hardware Test over the Internet
  • Command (⌘) – G—Get started (loads in Recovery mode)
  • Command (⌘) – L—Display the language selection screen
  • Command (⌘) – R—Run this test again
  • S—Shut down your Mac
  • R—Restart your Mac

Tip: If Apple Diagnostics or Apple Hardware Test is in progress and you press R on the keyboard or click the Restart button, there may be a 10 to 20 second delay.

Error codes generated in Apple Diagnostics or Apple Hardware Test

If Apple Diagnostics or Apple Hardware Test isolate a hardware issue with your computer, you will get an error code.

You will need this code to learn more about what might be wrong with your computer and how to troubleshoot the issue. In addition, these codes are required if you contact Apple or take your Mac to an Apple Authorized Service Provider or Apple Retail Store to determine which service and support options are available.

For instance, the reference code “ADP000” means that no issues have been found while the “NDL001” code denotes a possible issue with the Bluetooth hardware.

The diagnostic reference codes produced by Apple Diagnostics or Apple Hardware Test are listed in this Apple support document.

About macOS Recovery Mode

Recovery Mode, along with its online counterpart, Internet Recovery, provides a set of recovery and maintenance tools that let you:

Related tutorials

These tutorials cover a myriad of ways you can start up your Mac:

One of the definitive ways for an average user to determine if their Mac has a hardware problem is to run Apple Hardware Test or Apple Diagnostics, which is what we’re going to show you how to do in this tutorial. Yes, most Mac users will experience plenty of years of trouble-free computing, but sometimes hardware problems can surface. Perhaps it’s a failing disk drive, bad memory, a GPU issue, a motherboard problem, or a different hardware issue, there are a myriad of potential hardware troubles that can surface, even if they are rare.

The good news is that Apple Hardware Test can check to see if there are indeed hardware issues to look into, and you can run it yourself with just a little effort.

Note that Apple Hardware Test runs on Macs built in 2013 and before, whereas newer Mac models will run Apple Diagnostics instead. The appearances are slightly different as are the names, but the ability to test the hardware for problems is the same regardless of how things look or what they are called. Testing Apple hardware for troubles works the same on all Mac models, whether it’s an iMac, MacBook, MacBook Pro, MacBook Air, Mac Mini, or Mac Pro, and the version of Mac OS or Mac OS X on the computer does not matter.

How to Run Apple Hardware Test on a Mac to Diagnose Hardware Problems

  1. Connect the Mac to a power source if you have not done so already
  2. Disconnect all connected devices, drives, etc aside from a display / keyboard / mouse if applicable
  3. Shut down the Mac, then boot the Mac and at the moment the screen turns from black to grey, hold down the “D” key*
  4. Continue holding the “D” key until you see a progress bar (not the usual boot screen) – if the Mac is booting into Apple Hardware Test you will see a pixelated logo, if the Mac is booting into Apple Diagnostics you will see a simple progress bar or language selection screen instead
    • If in Apple Hardware Test – check the box for “Perform extended testing” and then click the “Test” button
    • If in Apple Diagnostics – let the “Checking your Mac” process run and complete
  5. The diagnostics tool will inform you if there is a problem found with the hardware:
    • If an error is found by the hardware diagnostics tool, this indicates there is a problem with some hardware on the Mac
    • If no errors are found, the Mac hardware is good and the issue experienced is almost certainly software related, therefore backing up and reinstalling Mac OS X may be a reasonable troubleshooting next step*

* If you are having trouble loading Apple Diagnostics can hold Option + D keys together to load the hardware test from the internet instead

If the Apple hardware diagnostics test determines there is a problem and reports an error, you should write down the error code and any provided details (or take a picture of it with your iPhone) so that you can learn more about the problem. Noting the error code will also help to relay information to an official Apple Technical Support advisor or an Apple Certified Repair center. For Macs with Apple Diagnostics, there is a list of error codes found in Apple Diagnostics here on support.apple.com, whereas Apple Hardware Test error codes are a bit more self explanatory for technically inclined, and they can be searched for on the web to determine a potential match.

The example below shows Apple Hardware Test reporting a SATA issue with test result error code “4HDD /11/40000000: SATA(0,0)” – in this particular instance this signifies the hard disk has failed.

If you do have a hardware problem and the Mac is in warranty, the hardware issue will be taken care of by AppleCare if you contact the official Apple Support channels. Some errors can be resolved by the user by doing something like testing memory and replacing problematic RAM or hard drive (though if it’s in warranty you shouldn’t bother yourself), whereas other errors you will almost certainly need a certified repair center to deal with, like a GPU or logic board problem. Again, if the Mac is in warranty, let Apple or a certified repair center fix it.

If the Mac is out of warranty, whether or not you want to take a stab at it or let someone else handle the repair is likely a matter of your technical knowledge and comfort level in opening hardware to manually intervene. The latter scenario is really only appropriate for out-of-warranty computers owned by advanced users with extensive technical know-how, and most Mac users should simply take problematic hardware to an Apple Store or Apple Certified Repair location.

* If no hardware problems are reported, backing up the Mac with Time Machine and reinstalling Mac OS X system software is often a good idea. Advanced Mac users can also use sysdiagnose to further troubleshoot complex issues. It’s fairly easy to differentiate hardware problems from OS software problems in that a hardware problem will not resolve itself if you reinstall Mac OS X on the computer, whereas an OS issue almost certainly will resolve itself by reinstalling system software. It’s also worth keeping in mind that certain third party software may be problematic itself, unrelated to the system software or the hardware, which is often determined by a particular problem only appearing when a specific application is in use. There are many specifics to troubleshooting software problems which are far beyond the scope of this particular piece focusing on discovering and diagnosing problematic Mac hardware.

Have any questions or comments about Apple Hardware Test and Apple Diagnostics? Let us know in the comments below!

Apple Diagnostics, formerly known as Apple Hardware Test, can check your Mac for hardware issues.

If you think your Mac may have a hardware issue, you can use Apple Diagnostics to help determine which hardware component might be at fault. Apple Diagnostics also suggests solutions and helps you contact Apple Support for assistance.

Prepare your Mac

  1. Shut down your Mac.
  2. Disconnect all external devices except your keyboard, mouse, display, Ethernet connection (if applicable) and connection to mains power.
  3. Make sure your Mac is on a hard, flat and stable surface with good ventilation.

Start Apple Diagnostics

Apple silicon

  1. Turn on your Mac and continue to press and hold the power button as your Mac starts up.
  2. Release when you see the startup options window, which includes a gear icon labelled Options.
  3. Press Command (⌘)-D on your keyboard.

Intel processor

  1. Turn on your Mac and then immediately press and hold the D key on your keyboard as your Mac starts up.
  2. Release when you see a progress bar or you’re asked to choose a language.

View the test results

Apple Diagnostics shows a progress bar while it’s checking your Mac:

How to scan and diagnose hardware issues on your mac with apple’s built-in tools

When testing is complete, Apple Diagnostics will show the results, including one or more reference codes. Find out more about Apple Diagnostics reference codes.

How to scan and diagnose hardware issues on your mac with apple’s built-in tools

To repeat the test, click “Run the test again” or press Command-R.

To restart your Mac, click Restart or press R.

To shut down, click Shut Down or press S.

To get information about your service and support options, make sure your Mac is connected to the Internet, then click ”Get started” or press Command-G. Your Mac will restart to a web page with more information. When you’ve finished, choose Restart or Shut Down from the Apple menu.

Learn more

On an Intel-based Mac, if you can’t start Apple Diagnostics with the D key, try these solutions:

  • Press and hold Option-D at startup to use Apple Diagnostics over the Internet.
  • Make sure your Mac isn’t using a firmware password.

Justin Pot has been writing about technology for over a decade, with work appearing in Digital Trends, The Next Web, Lifehacker, MakeUseOf, and the Zapier Blog. He also runs the Hillsboro Signal, a volunteer-driven local news outlet he founded. Read more.

How to scan and diagnose hardware issues on your mac with apple’s built-in tools

Can’t get your Mac to start up? The problem could be software, in which case your best bet may be to reinstall macOS. If that fails, though, the problem could be hardware-related.

Happily, Apple offers tools outside the operating system that can scan your computer and diagnose hardware problems. If your Mac is acting up, and you can’t find a software solution, these tools make troubleshooting a lot easier.

Intel Macs built before June 2013 offer a program called the Apple Hardware Test; Macs built since then offer Apple Diagnostics. The two tools serve basically the same function, testing hardware and reporting back any problems. They’re also triggered by the same keyboard shortcut, so you don’t need to look up when your Mac was made to use one tool or the other.

To get started, shut your Mac down. Ideally you should unplug any external hardware, like USB hard drives or ethernet connections. Next, turn your Mac on, holding down the “D” key. Depending on when your Mac was made, one of two things will happen.

Using Apple Hardware Test to Troubleshoot Macs Made Before June 2013

If your Mac was made before June 2013, you’ll soon see this logo:

This means that Apple Hardware Test is starting. You may be asked to choose a language for the user interface. After that, you’ll see a user interface that resembles old versions of macOS, complete with a “Test” button:

How to scan and diagnose hardware issues on your mac with apple’s built-in tools

You can click the “Hardware” tab to find out more about your Mac, including the Serial number. To run your tests, however, you’re going to want to click the “Test” button.

Running the tests may take a while, particularly if you’ve got a lot of memory. When the scan is done you’ll see a list of any hardware errors detected, along with some error codes. You can write these codes down and look them up on your phone, or you can boot your Mac into recovery mode and look up the codes there.

Using Apple Diagnostics to Troubleshoot Macs Made After June 2013

If your Mac was made after December 2013, your Mac will load Apple Diagnostics. This tool is functionally similar to Apple Hardware Test, but instead of the retro macOS look, it feels like you never quite left the boot screen. You might be asked to pick a language, or the test might start immediately:

How to scan and diagnose hardware issues on your mac with apple’s built-in tools

The test might take a while, especially if you’ve got a lot of memory installed. When it’s done, you’ll get a list of potential hardware problems. Unlike the Apple Hardware Test, Apple Diagnostics gives you a plain language explanation of your problems.

How to scan and diagnose hardware issues on your mac with apple’s built-in tools

The error codes are still included, so you can look those up on your phone or boot your Mac into recovery mode to find more information.

What If Neither Tool Launches?

If neither tool launches, don’t worry: you’ve still got options.

  • If you’re Mac is running macOS (then OS X) 10.7 (Lion) or earlier, Apple Hardware Test is not installed on your hard drive. You’ll need Applications Install Disk 2 inserted, or the MacBook Air Software Reinstall Drive if you’re using an older MacBook Air.
  • If you’re using a more recent version of macOS, and neither tool is booting when you start up your Mac, you can boot both tools from the network. Simple hold Option+R when your computer starts up. You’ll be asked to connect to a wireless network, then the appropriate tool will be downloaded and executed as outlined above.

It’s good to have a few backup options, right?

What to Do If You Find Errors

As we said earlier, this tool will let you know about any hardware problems your Mac has, but won’t actually fix them. Exact repair tips are way outside the scope of this article, because there are thousands of things that might be broken.

If your Mac is still under warranty or AppleCare, you can write the codes down and share them with a technician at the Apple Store. If your Mac is out of warranty, however, you need to look into repair options on your own. I suggest Googling the error codes to see if others have had success fixing things, if you’re the do-it-yourself sort. Otherwise, you can call a local repair shop, or even the Apple Store, and get a quote.

Apple Diagnostics, formerly known as Apple Hardware Test, can check your Mac for hardware issues.

If you think your Mac might have a hardware issue, you can use Apple Diagnostics to help determine which hardware component might be at fault. Apple Diagnostics also suggests solutions and helps you contact Apple Support for assistance.

Prepare your Mac

  1. Shut down your Mac.
  2. Disconnect all external devices except keyboard, mouse, display, Ethernet connection (if applicable), and connection to AC power.
  3. Make sure that your Mac is on a hard, flat, stable surface with good ventilation.

Start Apple Diagnostics

Apple silicon

  1. Turn on your Mac and continue to press and hold the power button as your Mac starts up.
  2. Release when you see the startup options window, which includes a gear icon labeled Options.
  3. Press Command (⌘)-D on your keyboard.

Intel processor

  1. Turn on your Mac, then immediately press and hold the D key on your keyboard as your Mac starts up.
  2. Release when you see a progress bar or you’re asked to choose a language.

View the test results

Apple Diagnostics shows a progress bar while it’s checking your Mac:

How to scan and diagnose hardware issues on your mac with apple’s built-in tools

When testing is complete, Apple Diagnostics shows the results, including one or more reference codes. Learn about Apple Diagnostics reference codes.

How to scan and diagnose hardware issues on your mac with apple’s built-in tools

To repeat the test, click “Run the test again” or press Command-R.

To restart your Mac, click Restart or press R.

To shut down, click Shut Down or press S.

To get information about your service and support options, make sure that your Mac is connected to the internet, then click ”Get started” or press Command-G. Your Mac will restart to a webpage with more information. When you’re done, choose Restart or Shut Down from the Apple menu.

Learn more

On an Intel-based Mac, if you can’t start Apple Diagnostics with the D key, try these solutions:

  • Press and hold Option-D at startup to use Apple Diagnostics over the internet.
  • Make sure that your Mac isn’t using a firmware password.

Formerly known as Apple Hardware Test, Apple Diagnostics is a system-integrated feature on newer Macs running macOS Big Sur and macOS Monterey that can check your Mac for hardware issues. This article explains how to use it on Apple silicon Macs and Intel Macs.

How to scan and diagnose hardware issues on your mac with apple’s built-in tools
If you think your Mac has a hardware problem, you can use Apple Diagnostics to help you determine which hardware component might be at fault. Apple Diagnostics can also suggest solutions and get you in touch with Apple Support for additional help.

Before you use Apple Diagnostics, make sure your Mac is shut down (choose Apple menu -> Shut Down from the menu bar) then disconnect all external devices except for the keyboard, mouse, display, and any Ethernet connection if you have one. Make sure your Mac is connected to a power outlet, then follow the steps below for your type of Mac.

How to Use Apple Diagnostics on an Apple silicon Mac

  1. Turn on your Mac and continue to press and hold the power button as your Mac starts up.
  2. Release the power button when you see the startup options window (you’ll see the internal disk icon and a gear icon labeled Options).
  • Press the Command-D key combination on your keyboard.
  • How to Use Apple Diagnostics on an Intel Mac

    1. Press the power button to turn on your Mac, then immediately press and hold the D key on your keyboard as your Mac starts up.
    2. Release the D key when you see a progress bar or you’re asked to choose a language.

    After you’ve followed the above steps, Apple Diagnostics will begin to run on your Mac. When it’s finished testing your machine, the results will be shown, including one or more reference codes to help you identify any potential issues (refer to Apple’s support page to learn more about reference codes). To repeat the test, click Run the test again or press Command-R. Alternately, click Restart or Shut Down.

    To get more information about your service and support options, make sure that your Mac is connected to the internet. Then click Get started or press Command-G. Your Mac will restart and open a webpage with more information. When you’re done, choose Restart or Shut Down from the Apple menu.

    How to scan and diagnose hardware issues on your mac with apple’s built-in toolsModern Macs have a built-in diagnostic test that can be used to help troubleshoot a hardware problem. The technology has changed over the years, and the procedure is determined by how old your Mac is.

    There a many ways a problem can crop up on your Mac. It could be a corrupted or failing boot hard disk or SSD, a flaky peripheral or a damaged or conflicted OS X. This article is restricted to the case where you suspect something is wrong with the very Mac itself.

    The first step is to determine the OS version and year your Mac was introduced. One way to do this is to use Apple Menu > About This Mac . (If the introduction date for the product isn’t specified, you can use a great app called Mactracker to convert a model number to an introduction date.)

    The first applicable document here is Apple support doc #PH18765. In summary, as Apple states it:

    • If your Mac is from 2013 or later, use Apple Diagnostics, which is built into your Mac.
    • If your Mac is from 2012 or earlier and has OS X v10.8.4 or later, use Apple Hardware Test, which is built into your Mac.
    • If your Mac is from 2012 or earlier and has OS X v10.8.4 or earlier, use the system software disc or USB flash drive that came with your Mac.

    For this how-to, I’ll discuss Macs introduced in June 2013 or later and the Apple Diagnostics.

    Apple Diagnostics

    The Apple Diagnostics has detailed steps on how to shut down your Mac, which peripherals to disconnect, and how to hold down the D key at boot. Note that there is no prefix key used here. Hold down just the D key right after you hear the startup chime.

    Note that if you leave the Ethernet cable plugged in and boot with OPTION + D, you can do some extra things, such as access your support and service options and contact Apple support.

    You should review this Apple Diagnistics page and even print it so you have a handy reference during the testing. Especially useful are the keyboard shortcuts that are available.

    After booting, you’ll see a black screen with a progress bar when the Apple Diagnostics start.

    How to scan and diagnose hardware issues on your mac with apple’s built-in tools

    The test takes only a few minutes. When it’s done, you see a notice with error Reference codes that describe the likely problem. Apple has an extensive page of error Reference codes that describe the problem(s) found, if any.

    How to scan and diagnose hardware issues on your mac with apple’s built-in toolsTest complete and Reference code provided.

    If you get the code ADP000, “No issues found,” you can reconnect your peripherals, reboot and look for the trouble elsewhere. Otherwise, follow the steps listed on the Reference codes page linked above.

    Apple has provided a wealth of information that will help you isolate a possible problem with your Mac’s hardware.

    Apple gives you a number of options if you need to troubleshoot software and hardware issues that might be plaguing your Mac. If you cannot determine the root cause of your problem by isolating issues in macOS, your first port of call should be macOS’ built-in recovery tools.

    But that may not be necessarily enough and Recovery Mode may be unable to help you get your Mac back to working order.

    As the last option, you can boot your Mac in a hardware diagnostics mode, which on newer Macs is called Apple Diagnostics or Apple Hardware Test on older models. In this tutorial, we’ll show you how to enter Apple Diagnostics or Apple Hardware Test mode to identify the potential source of a hardware issue.

    Apple Diagnostics or Apple Hardware Test mode?

    Apple Diagnostics and Apple Hardware Test mode can help determine which hardware component may be causing the issue on your computer, and provide first steps to try and resolve it.

    On Mac computers introduced before June 2013, you will use Apple Hardware Test, an older version of Apple Diagnostics mode. Macs introduced after June 2013 will use Apple Diagnostics mode instead.

    If your Mac’s hard drive or flash storage lacks Apple Diagnostics or Apple Hardware Test, your computer will load their Internet-based counterparts provided your Mac is connected to the Internet via Ethernet or Wi-Fi.

    There’s no functional difference between local and Internet-based versions of Apple Diagnostics and Apple Hardware Test modes.

    Booting Apple Hardware Test from macOS install disc

    Older Macs with OS X Lion 10.7 and earlier that don’t have Apple Hardware Test on the startup disk can boot this feature from the Applications Install Disc 2 or the MacBook Air Software Reinstall Drive which shipped with late-200 MacBook Airs.

    Just insert the disc that came with your Mac into its built-in optical drive or an external Superdrive (owners of the late-2010 MacBook Air model will insert the MacBook Air Software Reinstall Drive into a USB port) before following the steps outlined further below in this article.

    How to start up your Mac in Apple Diagnostics or Apple Hardware Test mode

    If you have a Mac notebook, double-check that the computer is connected to the power adapter to prevent it from shutting down during testing. Additionally, unplug all external devices, including USB thumb drives and external storage devices, from your Mac except the keyboard, mouse, display and Ethernet adapter.

    If you have an Internet connection, Apple Hardware Test or Apple Diagnostics will upload results to Apple and recommend support resources on the company’s support website which are related to the detected issues.

    1) Select Shut Down in the Apple menu to turn off your Mac.

    2) Press the power button to turn on the computer.

    3) Immediately press and hold the D key on the built-in keyboard until Apple Hardware Test or Apple Diagnostics begins inspecting your hardware configuration, which may take a minute or so.

    How to scan and diagnose hardware issues on your mac with apple’s built-in tools

    Tip: To start Apple Diagnostics or Apple Hardware Test over the Internet, press the Option (⌥) – D key combination.

    4) Now select your desired language for Apple Diagnostics or Apple Hardware Test and click the right arrow, or press the Return key.

    How to scan and diagnose hardware issues on your mac with apple’s built-in tools

    5) Choose which sort of tests you wish to perform. You can perform basic tests by clicking the Test button, or run a barrage of detailed diagnostic test by ticking the box next to “Perform extended testing” and then hitting the Test button.

    6) Test results will appear after a few minutes. As the tests are performed, your Mac notebook’s fan may kick into overdrive. If there’s something wrong with your computer, you’ll get a brief description along with a reference code.

    How to scan and diagnose hardware issues on your mac with apple’s built-in tools

    If no issues are found, a “No issues found” message appears. Apple Diagnostics reference codes are explained in the last section.

    7) To exit Apple Diagnostics or Apple Hardware Test mode, click Restart or Shut Down button.

    Steps to take if an issue has been detected

    If you Mac is connected to the Internet via Ethernet or Wi-Fi and an issue has been detected, you will be offered to get support articles from Apple. To determine your support and service options relating to any issue, you must click the Get Started link or press the Command (⌘) – G keystroke.

    Doing so will reboot your Mac in OS X Recovery Mode which will let you access your support and service options through Safari and see additional troubleshooting steps and information to help resolve your issue.

    How to scan and diagnose hardware issues on your mac with apple’s built-in tools

    After choosing your country, click the Agree to send link to send your Mac’s serial number and reference codes to Apple.

    Keyboard shortcuts in Apple Diagnostics and Apple Hardware Test

    You can use the following keyboard shortcuts to enter Apple Diagnostics or Apple Hardware Test and select its features.

    • D at boot time—Start Apple Diagnostics or Apple Hardware Test
    • Option (⌥) – D at boot time—Start Apple Diagnostics or Apple Hardware Test over the Internet
    • Command (⌘) – G—Get started (loads in Recovery mode)
    • Command (⌘) – L—Display the language selection screen
    • Command (⌘) – R—Run this test again
    • S—Shut down your Mac
    • R—Restart your Mac

    Tip: If Apple Diagnostics or Apple Hardware Test is in progress and you press R on the keyboard or click the Restart button, there may be a 10 to 20 second delay.

    Error codes generated in Apple Diagnostics or Apple Hardware Test

    If Apple Diagnostics or Apple Hardware Test isolate a hardware issue with your computer, you will get an error code.

    You will need this code to learn more about what might be wrong with your computer and how to troubleshoot the issue. In addition, these codes are required if you contact Apple or take your Mac to an Apple Authorized Service Provider or Apple Retail Store to determine which service and support options are available.

    For instance, the reference code “ADP000” means that no issues have been found while the “NDL001” code denotes a possible issue with the Bluetooth hardware.

    The diagnostic reference codes produced by Apple Diagnostics or Apple Hardware Test are listed in this Apple support document.

    About macOS Recovery Mode

    Recovery Mode, along with its online counterpart, Internet Recovery, provides a set of recovery and maintenance tools that let you:

    Related tutorials

    These tutorials cover a myriad of ways you can start up your Mac:

    Your Mac computer as it gets older, and as perfect as the operating system seems, can go haywire and start to spout errors. An older computer will start freezing for longer periods of time when executing demands. Applications crash by “quitting unexpectedly”. New software might jumble with the existing system. Your Mac computer might freeze or crash for any number of reason.

    But the process for fixing your problem through troubleshooting is similar for each case, whether you have crashing or freezing apps, or a spinning beach ball. If the problem persists, try entering your computer into Apple Safe Mode for troubleshooting.

    Crashing Apps

    Sometimes an application on your computer crashes while you are using it. If you reopen the app, and it runs smoothly, the problem might be an isolated incident and shouldn’t trouble you further. If the problem is isolated to one app and one occurrence, you don’t need to bother with troubleshooting your Mac.

    An error message appears after the crash, along with the option to send Apple a diagnostic report of the incident. The dialog box might ask you whether you want to reopen the old crashed window. Prevailing computer wisdom says, “Don’t re-open old windows unless necessary. An item in your old open window might have caused the crash.”

    If you don’t want Apple to automatically receive information about crashes, go to the Security & Privacy section of System Preferences, click Privacy, select Diagnostics & Usage, and uncheck Send Diagnostic and Usage Data to Apple. After you do that, the dialog box changes to show Ignore, Report, and Reopen.

    If the application problem persists, you might be having a problem with the software. Try entering into Safe Mode to fix your computer. Safe Mode is an operating system environment that only runs the applications necessary for the boot of your system. On top of that, Safe Mode runs diagnostic and repair tools on your computer. Safe Mode is meant for computer maintenance.

    Spinning Beach Balls

    Sometimes an app freezes for all eternity, and the dreaded beach ball comes up on the app window. The beach ball appears when your hardware can’t handle the performance of the software’s request. It’s normal to see the beach ball when your computer performs intensive, complex tasks. But a lingering, spinning beach ball is abnormal and could be a sign of bigger problems. There are numerous reasons why a beach ball might appear and numerous ways to fix this problem; they fall under two categories.

    Hardware Or Software

    Often times freezing applications on your computer are a result of hardware issues. If you recently connected a new USB drive or device, disconnect the new device and restart the computer. Another reason might be because you don’t have enough memory space (RAM) on your hard drive to facilitate the transaction. Similarly, if your startup disk is full, you have less space available for active files to run. A good rule of thumb is to always have at least 10 GB of free space on your startup disk.

    If you know you have a hardware problem, the solution is simple: upgrade! The fact that your computer is slowing down sounds like the time for a new computer. Unfortunately, that can be expensive. For an easier fix, try optimizing your hard drive with a Mac protection software such as Drive Genius 5. Drive Genius gives you total control over your hard drive. You can repair, delete, check, and rebuild files, along with a plethora of other features, including an automated Malware Scan. You can visit the Drive Genius 5 comparison blog to see all the features that Drive Genius offers.

    If the freezing problem is software related, first try and wait a few minutes for the software to load or crash. You can force quit out of the application too. If the operating system is stalled, you can try to shut down or restart your computer manually by pressing Command+Eject or Command+Control+Eject respectively. If this doesn’t work, press and hold the power button on your Mac until it shuts off. This will restart your computer and hopefully fix the problem.

    The last tip is to close all of your unnecessary and open applications. The less applications you run, the faster your computer will be.

    Safe Mode

    If the problem still exists in your normal boot environment, try Safe Mode. To enter into Safe Mode, restart your computer and immediately after the startup sound rings, press and hold the shift key until a gray Apple logo pops up on the screen. You will be introduced into a boot environment where only the essential programs required to run the operating system are loaded.

    Normally, when you turn on your computer, a bunch of friendly programs startup as well, iTunes, Spotify, Dropbox, Mail, Calendar, etc. By restarting into Safe Mode, only the core operating system will run. Safe Mode then checks your computer running background maintenance features. If your problem still persists, visit AppleCare or call Apple’s support number to receive help from their trained professionals.

    Additional Solutions

    There are a few more things you can do to fix certain problems. If an application doesn’t respond to a particular document, try another (earlier) version of the document. You can also try to open the document with a different application.

    Update your software! Make sure your software is up-to-date. The developers might have developed a patched fix for the problems you are encountering. You can update your applications by going into the Mac Apple Store. For apps downloaded from third party sites, you can use the app’s built-in software update feature.

    Run a malware scan! Sometimes system problems are the result of malware running rampant in your computer. You can try Drive Genius 5 for an automated malware protection software. And if you think that malware isn’t a problem for Mac computers, guess again. You can read this blog on why you need antivirus for Mac.

    Backup your computer! As always, Prosoft Engineering recommends having a pristine secure backup of the data on your hard drive. For a powerful backup software, try Data Backup for Mac, which saves you from the disaster of emergency scenarios. Our company specializes in data recovery, but we hate to see hard drives lost to simple negligence.

    If your computer is exhibiting certain symptoms of old age or faulty software, try entering into Safe Mode to fix the problem. Good luck with your issue, and remember we are here to help!

    About the Author

    Jeremy S.

    My name is Jeremy, and I write for Prosoft Engineering. I am passionate about hard drive disaster prevention and recovery. In my free time, I like to read classic literature and explore the Bay Area.

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    Diagnose Mac networking problems with these three commands

    Diagnose Mac networking problems with these three commands

    Erik Eckel explains how to use three common commands to find networking issues and troubleshoot them.

    The Mac’s Systems Preferences Network applet enables configuring network settings, while the Network Utility (found within Applications\Utilities) provides a graphical interface for troubleshooting network errors. As Mac users and administrators develop greater skill and experience, however, they typically graduate to seeking specific Terminal commands to more quickly diagnose and repair network errors.

    The Mac Terminal, of course, provides direct access to the underlying OS. As previously reviewed, the Mac command line helps unlock the power of the command line, enter basic directory commands, navigate the Mac shell, simplify networking and more. Three critical network commands, however, potentially provide the most powerful network diagnostic and troubleshooting assistance. They are ifconfig, ipconfig and traceroute.

    ifconfig

    The ifconfig command reveals critical information regarding a Mac’s network interfaces, whether the network interface is a wired or wireless connection. Use the hostname command to confirm the system’s computer name. Numerous ifconfig command options are available, and most are well beyond the scope of such an overview as is found here.

    Users and administrators new to the ifconfig command should begin simply by familiarizing themselves with the wealth of information the basic ifconfig command returns when entered from the OS X Terminal. In addition to revealing each network interface’s MAC address, ifconfig reveals each network interface’s active IP address, hexadecimal netmask, and media duplex status.

    The ifconfig command also enables assigning a specific IP address to a specific network interface. For example, the following command assigns a LAN IP address of 192.168.1.2 to interface en0 (the wired Ethernet port on my MacBook Pro) using a subnet mask of 255.255.255.0:

    The en1 network interface, meanwhile, serves as the wireless network interface on newer OS X systems, by default.

    ipconfig

    The ipconfig command enables displaying such critical Mac network interface information as the LAN IP, subnet mask, DNS servers, and router (often the DHCP server source) information. The command can also configure network settings. However, it may be better for users and administrators familiar with the Windows ipconfig command to think of the OS X ifconfig command as the Windows’ ipconfig counterpart. Apple does not recommend using the OS X ipconfig command for any purpose other than debugging and testing.

    To display a Mac network interface’s IP address (for the wireless network interface, denoted by en1), enter this command:

    To display a Mac network interface’s subnet mask, enter this command:

    To determine the DNS server a Mac’s network interface is set to leverage, enter this command:

    To determine the router and DHCP information supplied to a Mac’s network interface, enter this command:

    The getpacket option returns much information. The router address is listed toward the very end.

    It should be noted, too, that all the ipconfig options work with OS X’s wired network interface, too. By default OS X Mountain Lion labels the wired network interface en0.

    traceroute

    One of the more trying network failures to diagnose and repair is failed network connectivity outside the organization. Such scenarios can prove maddening.

    For example, a client once experienced difficulty connecting to a critical cloud-based service. No Mac within the client’s office could connect to the cloud-based server. A support call to the cloud services provider quickly confirmed that the cloud services were operating properly; the problem was somewhere else. A “trace route” diagnosed the problem immediately; connection attempts from Louisville to the California-based cloud server were being dropped in Salt Lake City. The problem existed with the ISP, whose Utah-based routers were experiencing DNS errors.

    To run a trace route command testing the connection from your Mac’s location to the destination resource, enter this command (substituting your intended destination address for google.com):

    The traceroute command prints on screen the results of each step of the network path from your local Mac to the destination address, noting the IP addresses the path crosses along the way and the latency delays (in milliseconds) encountered at each stop. By identifying the location at which a connection fails or experiences undue delays, administrators and end users can determine where network failures are occurring.

    Chris Hoffman is Editor-in-Chief of How-To Geek. He’s written about technology for over a decade and was a PCWorld columnist for two years. Chris has written for The New York Times and Reader’s Digest, been interviewed as a technology expert on TV stations like Miami’s NBC 6, and had his work covered by news outlets like the BBC. Since 2011, Chris has written over 2,000 articles that have been read nearly one billion times—and that’s just here at How-To Geek. Read more.

    How to scan and diagnose hardware issues on your mac with apple’s built-in tools

    Troubleshooting a Mac is different from troubleshooting a PC, but not that different. Here’s how to use your Mac’s built-in startup options to test your hardware, boot in safe mode, reinstall macOS, and perform other system tasks.

    To access one of these tools, you’ll first have to shut down or restart your Mac. You’ll then have to press and hold the appropriate key or key combination before the gray startup screen appears. Press the keys right after the startup sound plays.

    Choose Another Startup Disk with the Startup Manager

    To boot from a specific device, press and hold the Option key while booting your Mac. You’ll see the Startup Manager appear. From here, you can choose to boot from different connected hard drives, USB flash drives, network locations, and other boot devices.

    To skip the Startup Manager and boot straight from a removable device—for example, a CD, DVD, or USB drive—instead of its internal drive, press and hold C. To boot directly from the network with Netbook, press and hold N instead.

    How to scan and diagnose hardware issues on your mac with apple’s built-in tools

    Test Your Hardware with Apple Diagnostics

    Apple Diagnostics tests your Mac’s hardware to ensure it’s working properly. On Macs released before June 2013, Apple Hardware Test (AHT) will appear instead of Apple Diagnostics.

    To access this tool, press and hold the D key while booting your Mac. Select your language and your Mac will automatically test its hardware and inform you if anything is wrong.

    How to scan and diagnose hardware issues on your mac with apple’s built-in tools

    Load the Bare Necessities with Safe Mode

    Macs offer a Safe Mode, also known as Safe Boot. When you boot in Safe Mode, your Mac will check its startup volume, only load necessary kernel extensions, and disable third-party fonts and startup options. It’s like Safe Mode on Windows—it won’t load third-party hardware drivers or startup programs, so you can use this mode to fix problems if your Mac isn’t working or booting properly.

    To load your Mac in Safe Mode, press and hold the Shift key while it boots. You can stop holding the Shift key when you see an Apple logo and progress bar. To leave Safe Mode, just reboot your Mac without holding the Shift key.

    How to scan and diagnose hardware issues on your mac with apple’s built-in tools

    Troubleshoot from the Command Line with Single-User Mode

    In single-user mode, you’ll be presented with a text-mode terminal you can use to enter commands you might need to troubleshoot problems. This works like Linux’s single-user mode—rather than getting multi-user operating system, you boot directly to a root shell.

    Press Command+S as your Mac boots to enter single-user mode. To leave this mode, type reboot at the prompt and press Enter.

    How to scan and diagnose hardware issues on your mac with apple’s built-in tools

    See More Detailed Information with Verbose Mode

    In verbose mode, you’ll see normally hidden messages appear on your screen. If your Mac is freezing, especially during the boot process, the messages here can help you identify and get help with the problem.

    Press Command+V as your Mac boots to enter verbose mode. You’ll see the terminal messages appear during the startup process. If everything goes properly, your Mac will boot to its normal desktop.

    How to scan and diagnose hardware issues on your mac with apple’s built-in tools

    Get Other Tools (or Reinstall macOS) with Recovery Mode

    Recovery Mode provides various graphical tools for working with your Mac. From here, you can reinstall macOS, restore your computer from a Time Machine backup, or use the Disk Utility to repair, wipe, and partition your Mac’s internal disks.

    Press Command+R as your Mac boots to access Recovery Mode. If necessary, you’ll be asked to connect to a network so your Mac can download the appropriate recovery software. You can then choose your language and use the graphical tools here.

    How to scan and diagnose hardware issues on your mac with apple’s built-in tools

    One of the nice things about a Mac is that this is all built-in. You don’t even have to download a macOS installer to access these tools—if necessary, your Mac will download the macOS installation files for you when you choose to reinstall the operating system. Better yet, it will download the most recent version of macOS so you won’t have to spend hours installing patches and service packs, as you do on Windows.

    Whether you’re curious about a device you purchased or want to see how well a phone runs before you sell it, here are the best diagnostic tools for iOS and Android.

    Wondering if your smartphone is in good health? Whether it’s a used phone you just bought or an old device you’re looking to sell, you can put it through a series of diagnostic tests. Some Android devices have built-in diagnostic tools, but the App Store and Google Play Store offer third-party diagnostic tools, too.

    Apps like Phone Doctor Plus, Phone Diagnostics, Phone Check and Test, and TextX can run a battery of tests to check the touch screen, audio, video, camera, microphone, sensors, and other components of your phone. Here’s how they work.

    Run Diagnostics on Samsung Phones

    Samsung’s line of Galaxy smartphones has a built-in diagnostics tool that’s accessible from the keypad. Open the Phone app and tap Keypad, then type *#0*#. A diagnostic screen pops up with buttons for a variety of tests.

    Tap Red, Green, or Blue to test those pixel colors. Tap Receiver to check the audio, Vibration to try the vibrating feature, or Sensor to test the accelerometer and other sensors. You can also tap Touch and then move your finger around the screen to test the touch screen, or tap Low Frequency to test low-frequency sounds.

    After your test is done, touch the screen or tap the back button to return to the main screen. If you tap the back button from the main menu, you will be returned to the Phone app.

    Samsung Members for Samsung Phones

    Samsung offers its own free app known as Samsung Members (Opens in a new window) , which can be downloaded from Google Play. It provides sales and technical support, and a built-in diagnostics tool as well. Open the app and tap the Diagnostic button on the home screen.

    Tap the individual icons to run diagnostic tests on the battery, SIM card, sensors, touch screen, flashlight, camera, microphone, speaker, Bluetooth, Wi-Fi, and more. Alternatively, tap the Test all button to perform all the tests one after the other. If the test is successful, a checkmark appears on its icon.

    Run Diagnostics on Motorola Phones

    Motorola phones can use the Device Help (Opens in a new window) app, which comes preinstalled on some devices. Open the app and tap Device diagnosis. Choose Troubleshoot to test the touch-screen display, battery, audio, camera, connectivity, and more.

    Select Hardware test to run diagnostics on the display, backlight, touch screen, multi-touch capability, flash, front and rear camera, and the proximity sensor. Run a test by tapping the icon for the feature you want to run. You can tap Full Test at the Hardware screen to perform all available diagnostics.

    Phone Doctor Plus for iPhone and Android

    Geared for iOS (Opens in a new window) and Android (Opens in a new window) , Phone Doctor Plus starts by showing you a list of different tests to run, including those for memory, CPU, speaker, microphone, Wi-Fi, Bluetooth, GPS, touch screen, camera, charging, and many more. Tap the Play button to run all the tests or swipe to the left to view a list of all available tests you can run individually. The app then displays the results of any tests.

    The app also provides a Status screen that displays your battery charge, available storage, free memory, and network bandwidth. It also researches and displays the trade-in value of your phone. The Android app also kicks in an inventory report that makes sure all the phone’s components are original and a battery health test to check the status of your battery.

    Phone Diagnostics for iPhone and Android

    Available for iPhone (Opens in a new window) and Android (Opens in a new window) , Phone Diagnostics offers a range of tests to check your touch screen, camera, speaker, microphone, Wi-Fi, cellular access, and many other components. Just tap the button for the test you wish to run or tap Start to run all the tests one after the other.

    The multi-touch test asks you to place three fingers on the screen. The camera test snaps photos using the front and rear cameras, while the video record test shoots a quick video using the rear camera. The motion test asks you to move your phone around, and the GPS test verifies your location on a map.

    The app doesn’t generate any reports or results, but each successful test turns its button green, while a failed or interrupted test appears in red. The app can also attempt to steer you to a repair shop should your phone need to be fixed. The basic version is free with ads, but you can pay $1.99 to go ad-free.

    There are various ways you can see if your Mac’s drive is on its way out.

    Topher, an avid Mac user for the past 15 years, has been a contributing author to MacFixIt since the spring of 2008. One of his passions is troubleshooting Mac problems and making the best use of Macs and Apple hardware at home and in the workplace.

    A failing hard drive can mean loss or corruption to important data or to applications and system software that can further destabilize the system. If your Mac regularly slows down or crashes, or if you get odd ‘permissions denied’ errors about the inability to access certain files you previously had access to, then your drive may be on its way out.

    The first option for testing your drive is to check its SMART (Self-Monitoring, Analysis, and Reporting Technology) status, which is a series of built-in benchmarks and thresholds that the drive regularly monitors itself. If any of these are out of place, then the drive will flag it to the system when a SMART check is performed. This can be done at any time using Disk Utility by opening the program and selecting your drive device. Then, at the bottom of the window you will see a “SMART Status” with the results of the check. If this says anything other than “Verified,” then you need to replace your drive.

    Disk Utility is not the only option for checking the SMART status, as there are numerous third-party programs like SMART Utility (some of which are free), that may be an even more thorough SMART checker than Disk Utility.

    The SMART verification status for the drive is located at the bottom of the Disk Utility window. Screenshot by Topher Kessler/CNET

    If the SMART status checks out, then check the disk’s formatting regularly with Disk Utility. If your first check shows formatting errors, boot to the Recovery HD partition by holding Command-R at startup, and then fix the drive. Follow this by checking the drive’s formatting regularly (daily), to ensure that no more errors crop up. If they do, then this indicates the drive may be failing.

    Finally, use a third-party utility like Drive Genius or Disk Tools Pro to check the drive’s media with a surface scan. This will check for bad blocks and replace them with spare blocks, if necessary. If you do find bad blocks with a scan, then again repeat this scan the following day, after using your system, and continue to do so for a few more days. If bad blocks continue to appear, then this suggests the drive will likely need to be replaced.

    For external drives, unfortunately, SMART status checking is not supported; however, you can still check its formatting and perform a surface scan.

    In addition, for external drives you can troubleshoot any daisy chains and drive connections if the drive will not mount, or if it suddenly ejects, since improper daisy-chaining can lead to loss in power or data connection that can corrupt drive contents.

    Questions? Comments? Have a fix? Be sure to check us out on Twitter.

    Your Mac’s hard disk must be working properly to ensure your computer’s overall system health is maintained. In general, Mac disks are extremely reliable and you’re not likely to encounter any physical problems with the drive unless it’s suffered an accident such as being dropped. In that case, the sudden motion sensor on the Mac will automatically park the disk read/write heads to minimise the chances of damage.

    Nevertheless, it’s recommended to occasionally check your disk status and run a few benchmark tests, as well as defragment the drive to make sure the folder structure and files are optimised. This will speed up file access times and make your Mac more responsive.

    This tutorial shows you how to:

    • Check your disk health, look for errors and make repairs
    • Benchmark disk performance
    • Perform defragmentation

    Diagnostics and Repair

    The quickest way to check whether your disk is functioning correctly is to use the Mac’s Disk Utility, but there are also a couple of third-party apps such as Drive Genius 3

    Disk Utility

    To check your drive with the built-in tool, follow the steps below.

    1. Open Disk Utility from the Applications -> Utilities folder or within Spotlight

    2. In the left-hand side panel, select your main hard disk as shown below

    The most important item to check initially is the S.M.A.R.T. Status area which indicates whether the disk has passed the power on tests. It’s recommended that you check this status quite regularly because a failing disk will need to be replaced quickly.

    3. Hit the Verify Disk button. Your disk’s status and any problems encountered will be displayed in the main window.

    In case any issues are seen, select Repair Disk to attempt to fix them. Disk Utility can’t fix any hardware problems with your disk, but there’s a good chance that data integrity and filesystem issues can be easily resolved.

    Disk Utility can check your Mac HD status and make repairs

    ” data-medium-file=”https://www.chriswrites.com/wp-content/uploads/Article-9-Disk-Utility-300×278.jpg” data-large-file=”https://www.chriswrites.com/wp-content/uploads/Article-9-Disk-Utility.jpg” loading=”lazy” src data-src=”https://www.chriswrites.com/wp-content/uploads/Article-9-Disk-Utility.jpg” width=”550″ height=”510″> Use Disk Utility to check your Mac’s HD status and make any necessary repairs

    Note: Repair Disk cannot repair any disks that you have already booted from so you will need to restart from another bootable drive, or the Mac OS installation disk, or the Lion recovery HD.

    To accomplish this:

    • Restart your computer and hold down the OPTION key when you hear the chime (or just press C to automatically boot from the DVD drive)
    • When your Mac restarts, select Mac OS X to boot from the DVD (unless you pressed C in the previous step) or choose the Lion Recovery HD
    • At the installation screen, select Disk Utility from the Utilities menu and then use the Repair Disk option from there. If you booted to the Lion Recovery HD choose Disk Utility from the Mac OS X Utilities screen, followed by Repair Disk in the normal way

    Choose Disk Utility at the Mac boot screen

    ” data-medium-file=”https://www.chriswrites.com/wp-content/uploads/Article-9-Mac-OS-X-Utilities-300×220.jpg” data-large-file=”https://www.chriswrites.com/wp-content/uploads/Article-9-Mac-OS-X-Utilities.jpg” loading=”lazy” src data-src=”https://www.chriswrites.com/wp-content/uploads/Article-9-Mac-OS-X-Utilities.jpg” width=”500″ height=”367″> Choose Disk Utility from the Mac’s boot screen

    Benchmark Your Mac Disk Speed

    It’s useful to know how fast your Mac’s disk really is, in order to compare it with others and also to check whether it’s performing consistently over time. It’s also interesting to perform the same tests on a regular hard disk and an SSD, because the difference can be quite staggering. The most convenient way to benchmark your disk speed is to download an application that measures raw read/write speeds. Two free apps available in the Mac App Store are as follows.

    Blackmagic Disk Speed Test

    Details: Mac App StoreThe Blackmagic app is a very simple utility which shows read/write speeds in MB/second, as well as a whole host of statistics indicating whether your disk is suitable for high speed video.

    The Blackmagic Speed Test application

    ” data-medium-file=”https://www.chriswrites.com/wp-content/uploads/Article-9-Blackmagic-Speed-Test-300×162.jpg” data-large-file=”https://www.chriswrites.com/wp-content/uploads/Article-9-Blackmagic-Speed-Test.jpg” loading=”lazy” src data-src=”https://www.chriswrites.com/wp-content/uploads/Article-9-Blackmagic-Speed-Test.jpg” width=”440″ height=”238″> The Blackmagic Speed Test application

    NovaBench

    Details: Mac App Store, NovaBench websiteNovaBench comprises a whole suite of performance benchmarks that includes drive write speeds. It’s an indispensable utility because it also measures memory speed, graphics and CPU performance.

    NovaBench measures disk write speed

    ” data-medium-file=”https://www.chriswrites.com/wp-content/uploads/Article-9-Novabench-263×300.jpg” data-large-file=”https://www.chriswrites.com/wp-content/uploads/Article-9-Novabench.jpg” loading=”lazy” src data-src=”https://www.chriswrites.com/wp-content/uploads/Article-9-Novabench.jpg” width=”347″ height=”396″> NovaBench measures your disk write speeds

    Defragmentation Tools

    Apple doesn’t actually recommend any specific defragmentation tools or even include any relevant utilities in Disk Utility. The Mac performs defragmentation automatically, but only when specific conditions are met such as the files being a certain size. Therefore, fragmentation can and still does occur and over time the problem just gets worse.

    Professional tools are the best option to defragment your Mac’s hard disk.

    Drive Genius 3

    Website: Drive Genius 4
    Drive Genius 4 includes a comprehensive suite of utilities to check and repair your Mac’s hard disk. It also includes a real-time monitor to check for errors, fragmentation and bad blocks whenever your Mac is idle.

    Drive Genius 3 includes defragmentation tools

    ” data-medium-file=”https://www.chriswrites.com/wp-content/uploads/Article-9-Drive-Genius-300×223.jpg” data-large-file=”https://www.chriswrites.com/wp-content/uploads/Article-9-Drive-Genius.jpg” loading=”lazy” src data-src=”https://www.chriswrites.com/wp-content/uploads/Article-9-Drive-Genius.jpg” width=”550″ height=”408″> Drive Genius 3 defragmentation tools

    Before you go

    After spending over 20 years working with Macs, both old and new, theres a tool I think would be useful to every Mac owner who is experiencing performance issues.

    CleanMyMac is highest rated all-round cleaning app for the Mac, it can quickly diagnose and solve a whole plethora of common (but sometimes tedious to fix) issues at the click of a button. It also just happens to resolve many of the issues covered in the speed up section of this site, so Download CleanMyMac to get your Mac back up to speed today.

    Five Best Computer Diagnostic Tools

    Computer diagnostics tools are pieces of software that give you the knowledge you need to be able to potentially repair your own computer. Some of these tools come built in to your operating system while others come from 3rd party software developers. Either way, these tools help save you time and money.

    Computer diagnostic tools can be used scan your computer’s hard drive, check your ram for errors, check cpu temp and give you information about any other devices connected to your computer. These tools are made to find problems that may be disrupting your computer’s normal performance. Once a problem is found, you can then plan your repair.

    Here are our top 5 favorite computer diagnostic tools:

    #1 Windows Performance Monitor

    How to scan and diagnose hardware issues on your mac with apple’s built-in tools

    The first one on our list is built right in to Windows operating systems. The performance monitor gives you a quick view of vital information related your computers hardware. From here, you can check out your CPU, Memory, Disk info and Ethernet information. You can use Performance Monitor to examine the effects of your running applications in both real time and by collecting data to check out for later analysis.

    #2 Windows Resource Monitor

    How to scan and diagnose hardware issues on your mac with apple’s built-in tools

    Windows Resource Monitor is number two on our list. This diagnostic tool is more robust that Windows Performance Monitor. It is better suited for tracking individual aspects of CPU, Network, memory and disk usage. This tool gives you an in depth look at what processes are affecting your CPU, how much memory is being used what is using it, individual process disk activity and network information like current TCP connections and what processes are listening on what port.

    #3 Open Hardware Monitor

    How to scan and diagnose hardware issues on your mac with apple’s built-in tools

    Open Hardware Monitor is a free open source application that runs on Windows and Linux systems. This diagnostic tool monitors your computers temperature sensors, fan speeds, voltages, load and clock speeds. If your computer is shutting down by itself, hanging or crashing, this tool can come in real handy by telling you that your system is overheating or the fans aren’t working properly.

    #4 Speccy

    How to scan and diagnose hardware issues on your mac with apple’s built-in tools

    Speccy is another great computer diagnostic tool. This application gives information on just about everything including software, hardware, peripherals, disk info, graphics & network data. Its easy to use layout make troubleshooting and maintenance a breeze. Great application to start with when you are looking for specific info about your computer.

    #5 HD Tune

    How to scan and diagnose hardware issues on your mac with apple’s built-in tools

    HD Tune Pro is a great tool for HDD and SSD diagnostics. This utility allows you to benchmark your storage device showing you the minimum, maximum and average transfer rates along with many other useful tools. The other features of HD Tune include detailed drive info, error scanning, & drive health. The pro version allows you to check the health status of multiple drives, offers folder usage info, secure erase, file benchmark, disk monitor, cache test & extra tests.

    Computer diagnostics are meant to serve a vital purpose. They are important tools which work automatically, with very little effort necessary from the end user. They help you discover and fix problems within your hard disks and network configurations. Rather than manually searching for small, hard-to-find problems on your own, you can simply allow computer diagnostics tools to take care of your problems for you!

    • 4.8
    • 969 User reviews

    Whenever you go online you most probably do so through WiFi. Because wireless networks are so popular it makes sense to ensure the top performance with efficient WiFi analyzer tools.

    1. NetSpot
    2. WiFi Scanner
    3. iStumbler for Mac
    4. WiFi Explorer
    5. KisMAC
    6. Mac Wireless Diagnostics Tool
    7. inSSIDer
    8. AirRadar 5

    So what are those WiFi analyzer apps and how does one use them? A WiFi analyzer app detects all available WiFi networks around and should provide you with detailed info on every network it found. You should be able to see which channels networks use, the signal strengths, WiFi encryption methods used, etc.

    Why can it be rather useful to know which channel a wireless network operates on? Because in a WiFi crowded space, where every neighbor has their own network, overlapping channels is the most common reason of a slower connection. When you figure out which channels are the least crowded and switch to one of those you’ll see the immediate difference in your WiFi performance.

    Use WiFi analyzer tools for everything

    A WiFi analyzer app will be able to help you choose the most suitable WiFi network and select the most efficient WiFi channel for your router thanks to comprehensive visual graphs.

    High-quality Mac WiFi analyzer tools have the possibility to create accurate WiFi signal strength heatmaps, where you’ll be able to clearly see and analyze the areas with the strongest, not so strong, and the weakest signal and decide how you can mend the issues.

    Let’s take a look at some situations when Mac WiFi analyzer tools come in handy:

    • Poor performance: There are many possible reasons why websites may load slowly, and WiFi analyzer tools can help you pinpoint the exact cause of your performance issues.
    • Unreliable connection: Many WiFi reliability issues boil down to signal interference caused by other networks in the same area, and WiFi analyzer tools can tell you which frequencies and channels are crowded the most.
    • Finding free WiFi: Using a capable WiFi analyzer app, it’s possible to discover hidden networks and analyze their security settings.

    Here we are overviewing 8 best WiFi analyzer apps for Mac highlighting their pros and cons:

    1. NetSpot — WiFi analyzer app for macOS offers the most visual and convenient heat maps and more.
    2. WiFi Scanner — WiFi analyzer app for Mac that also detects access points and clients in ad-hoc mode in case the SSID is broadcasted.
    3. iStumbler for Mac — WiFi analyzer app for Mac will display networks according to their types, i.e. Bluetooth, Bonjour or AirPort.
    4. WiFi Explorer — Detect issues that may be affecting connection and the performance of your network, such as channel conflicts, overlapping and configuration issues, etc.
    5. KisMAC — an open-source WiFi analyzer application for Mac OS that can map wireless networks and lay out the info on their performance so you can easily troubleshoot.
    6. Mac Wireless Diagnostics Tool — a built-in Mac WiFi analyzer that’s included in all version of macOS.
    7. inSSIDer — the basic version of this WiFi analyzer allows Mac users to collect all essential information about nearby WiFi networks.
    8. AirRadar 5 — this free-to-try WiFi analyzer for Mac is great for performing large-scale WiFi site surveys.

    Read, try, see what works best for you and your wireless network.

    The Apple Hardware Test

    The Apple® Hardware Test is an important troubleshooting utility that began shipping with new Macintosh® computers sometime in the year 2000. If your Mac predates the inclusion of the Apple Hardware Test, see the section “My Mac predates the Apple Hardware Test” below.

    This FAQ is based on the “Hardware Testing” chapter of our book, Troubleshooting Mac® OS X.

    Running the Apple Hardware Test

    The Apple Hardware Test was originally distributed on an Apple Hardware Test CD. It is now distributed on a special volume on the Mac OS X Install Disc 1 DVD included with the computer. Each Apple Hardware Test is specific to the type and model of Mac with which it was distributed.

    To run the Apple Hardware Test, you must start up from the disc or volume containing the test:

    Start up from it as you would any other bootable disc:

    Restart your Mac by either:

    Note: If you have a MacBook Air®, see the AppleCare Knowledge Base document “MacBook Air: Using Apple Hardware Test.”

    Restart your Mac by either:

    When the wristwatch progress indicator disappears — indicating that the Startup Manager’s scan for bootable volumes has completed — select the Apple Hardware Test volume.

    After starting up from the Apple Hardware Test, run the Extended Test.

    You may want to run the Extended Test several times in a row as intermittent problems may not show up in every execution of the test.

    If the test fails, be sure to write down the exact message associated with the failure.

    Running the Apple Hardware Test in Loop Mode

    Running the Apple Hardware Test in Loop Mode overnight is an excellent troubleshooting step for finding intermittent hardware problems. It is especially useful when troubleshooting intermittent kernel panics.

    If Loop Mode is supported by the version of the Apple Hardware Test you are using, you run the Extended Test in Loop Mode by pressing Control-L before starting the test. Looping On should appear in the right window. Then click the Extended Test button.

    The test will run continuously until a problem is found. If a problem is found, the test will cease to loop, indicating the problem it found. If the test fails, be sure to write down the exact message associated with the failure.

    Intermittent RAM problems may take many loops to appear: let the test run overnight.

    If no problems are found after running the Extended Test in Loop Mode overnight, you can stop the Extended Test and exit Loop Mode by either:

    • Pressing the Command-period keyboard shortcut, i.e. Command-.
    • Clicking the Cancel or Stop Test buttons. This can be difficult to do in Loop Mode.
    • Manually restarting your Mac. Restarting manually, i.e. via either the power button or — if your Mac is so equipped — the Reset button, when you have started up from the Apple Hardware Test should not cause problems.

    My Mac predates the Apple Hardware Test

    If your Mac predates the inclusion of the Apple Hardware Test with new computers, you can use the following third-party utilities to test your hardware:

    • Micromat® TechTool® Pro includes a comprehensive suite of hardware tests applicable to all Macs. TechTool Pro 4.5.x or later is available as a Universal Binary for both PowerPC- and Intel-based Macs.
    • If you purchased an AppleCare Protection Plan, your may have received a Micromat TechTool Deluxe CD that includes some hardware tests. An inexpensive upgrade from TechTool Deluxe to TechTool Pro is available from Micromat.
    • The freeware command-line utility Memtest has been used by many to successfully test RAM. The freeware utility Rember provides a graphical user interface (GUI) to Memtest.

    Note: Use only the hardware tests of third-party utilities that combine hardware testing and disk utilities, such as TechTool Pro and TechTool Deluxe, unless the version of your third-party utility also includes disk utilities that are compatible with your version of Mac OS X. In other words, only use disk utilities that are compatible with the version of Mac OS X you are using.

    We design Mac hardware and software with advanced technologies that work together to run apps more securely, protect your data, and help keep you safe on the web. And with macOS Big Sur available as a free upgrade, it’s easy to get the most secure version of macOS for your Mac.*

    More secure
    hardware means more secure software.

    Apple M1 chip.
    A shared architecture for security.

    The Apple M1 chip with built-in Secure Enclave brings the same powerful security capabilities of iPhone to Mac — protecting your login password, automatically encrypting your data, and powering file-level encryption so you stay safe. And the Apple M1 chip keeps macOS secure while it’s running, just as iOS has protected iPhone for years.

    Apple helps you keep your Mac secure with software updates.

    The best way to keep your Mac secure is to run the latest software. When new updates are available, macOS sends you a notification — or you can opt in to have updates installed automatically when your Mac is not in use. macOS checks for new updates every day and starts applying them in the background, so it’s easier and faster than ever to always have the latest and safest version.

    Safely run apps like never before.

    Protection starts at the core.

    The technically sophisticated runtime protections in macOS work at the very core of your Mac to keep your system safe from malware. This starts with state-of-the-art antivirus software built in to block and remove malware. Technologies like XD (execute disable), ASLR (address space layout randomization), and SIP (system integrity protection) make it difficult for malware to do harm, and they ensure that processes with root permission cannot change critical system files.

    Download apps safely from the Mac App Store. And the internet.

    Now apps from both the App Store and the internet can be installed worry-free. App Review makes sure each app in the App Store is reviewed before it’s accepted. Gatekeeper on your Mac ensures that all apps from the internet have already been checked by Apple for known malicious code — before you run them the first time. If there’s ever a problem with an app, Apple can quickly stop new installations and even block the app from launching again.

    Your data. Your rules.

    Stay in control of what data apps can access.

    Apps need your permission to access files in your Documents, Downloads, and Desktop folders as well as in iCloud Drive and external volumes. And you’ll be prompted before any app can access the camera or mic, capture keyboard activity, or take a photo or video of your screen.

    FileVault 2 encrypts your data.

    With FileVault 2, your data is safe and secure — even if your Mac falls into the wrong hands. FileVault 2 encrypts the entire drive on your Mac, protecting your data with XTS-AES 128 encryption. Mac computers built on the Apple M1 chip take data protection even further by using dedicated hardware to protect your login password and enabling file-level encryption, which developers can take advantage of — just as on iPhone.

    Safer browsing with Safari.

    Designed to protect your privacy.

    Online privacy isn’t just something you should hope for — it’s something you should expect. That’s why Safari comes with powerful privacy protection technology built in, including Intelligent Tracking Prevention that identifies trackers and helps prevent them from profiling or following you across the web. A new weekly Privacy Report on your start page shows how Safari protects you as you browse over time. Or click the Privacy Report button in your Safari toolbar for an instant snapshot of the cross-site trackers Safari is actively preventing on that web page.

    Automatic protections from intruders.

    Safari uses iCloud Keychain to securely store your passwords across all your devices. If it ever detects a security concern, Password Monitoring will alert you. Safari also prevents suspicious websites from loading and warns you if they’re detected. And because it runs web pages in separate processes, any harmful code is confined to a single browser tab and can’t crash the whole browser or access your data.

    How to scan and diagnose hardware issues on your mac with apple’s built-in tools

    If you suspect a specific piece of hardware is not working correctly, click the appropriate links below. Otherwise, if you are unsure which hardware may have an issue, we suggest browsing through the whole document for a proper diagnosis. Although hardware failures most certainly may occur in your computer, it is important to check for as many software issues as you can before proceeding. The fact is, most errors are caused by software (such as drivers) related problems, not by a failing hardware device. See basic troubleshooting for a good starting point.

    • Computer HDD (hard disk drive).
    • Computer RAM (random access memory).
    • Computer motherboard & CPU (central processing unit).
    • Computer PSU (power supply unit).
    • Computer CD/DVD disc drives.
    • Computer network, Wi-Fi, or Internet.

    Computer HDD (hard disk drive)

    Computer RAM (random access memory)

    Computer motherboard & CPU (central processing unit)

    Computer PSU (power supply unit)

    Although some programs, such as SpeedFan, helps monitor the voltage and power supplied to computer fans, there is no software utility to test the integrity of computer power supplies.

    There are methods of testing the connectors on a power supply using a multimeter. However, due to potential damage to the power supply, the motherboard, and components connected to it, this information is not posted on Computer Hope. Due to their relatively low cost and easy installation, we recommend users replace the power supply if it’s believed to be failing or bad.

    Computer CD/DVD disc drives

    Computer network, Wi-Fi, or Internet

    If you are having problems connecting to the Internet on your devices, you may be encountering a problem with your network or Wi-Fi connection. Below are the steps on troubleshooting networking and Wi-Fi related problems.

    If your Mac is having issues, starting it in Safe Mode can be a good way to troubleshoot it.

    Safe Mode starts your Mac without starting any other programs, so you can test whether it’s a program that’s causing issues, or your system as a whole.

    If your Mac is having issues, starting it in Safe Mode can be a way to resolve those issues, or help you figure out what’s going wrong based on how it reacts to the Safe Mode start.

    Here’s how to get it done.

    Check out the products mentioned in this article:

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    How to start a Mac in Safe Mode

    Before you get started, be aware that when you start your Mac in Safe Mode, you won’t be able to do certain things, like:

    • Play movies in your DVD player (if you have one).
    • Capture video in iMovie.
    • Access VoiceOver accessibility options.
    • Use file sharing.

    Some USB, Firewire, and Thunderbolt devices may also not work, and your internet access may be limited (or even unavailable). If you need to access the systems that aren’t available through Safe Mode, simply restart the computer as you normally would.

    All that aside, starting a Mac in Safe Mode is easily accomplished (but there will likely be follow up work involved to ensure that your Mac is back in good working order):

    1. Click the Apple icon in the top-left corner and select either “Shut Down” or “Restart.”

    2. While your Mac starts or restarts, immediately press and hold the shift key — you should see the Apple logo appear on your screen (if not, it may be a power issue ).

    3. When you see the login window appear, release the shift key (you may be asked to login twice if your Mac is encrypted with FileVault).

    If after going through this process, the issue your Mac was experiencing goes away, try restarting it again normally (i.e. not in safe mode). If the problem doesn’t recur, you’re good to go, otherwise you may have incompatible login items — in other words, one of the programs that’s starting when your Mac turns on is screwing things up.

    To check that your computer did, indeed, start in Safe Mode, you’ll want to use System Preferences. Start by clicking the Apple icon in the top-left corner of the screen and then select “About this Mac.” Next, click “System Report.” Finally, in the new pop-up window, select “Software” — you should see the word “Safe” listed next to “Boot Mode.”

    How to scan and diagnose hardware issues on your mac with apple’s built-in tools

    Storage media of all kinds is consumable. To put it simply, it will fail one day. To keep ahead of the game, there are plenty of ways to check your SSD health on the Mac. Here we show you how to check your SSD health on your Mac and also take a quick look at some third-party tools to help you.

    Also read: How Much Storage Do You Need on Mac?

    What Is Disk Health?

    Spinning HDD drives have a failure curve sometimes described as a “bathtub.” When you first get an HDD, there’s a high chance of failure thanks to so-called Dead On Arrival (DOA) units. If the drive spins up properly, it will likely last for years before suffering wear-based failure.

    In other words, there’s a high chance of failure at the beginning and end of a drive’s service life (i.e. the walls of the bathtub). In contrast, there’s a relatively low rate of failure in the middle (i.e. the base of the bathtub).

    How to scan and diagnose hardware issues on your mac with apple’s built-in tools

    On the other hand, SSDs show a different failure curve. They still have the same high rates of early failure. but the flash memory used in SSDs can only survive a certain number of write cycles. When it reaches the limit, it will suffer total failure and no data recovery is possible. As such, it pays to keep an eye on the health of a drive that might fail without warning.

    You can predict and plan for both failure types in advance based on certain characteristic failure patterns. Self-Monitoring, Analysis and Reporting Technology (SMART) is an automated self-test system for SSDs and more traditional HDDs. This helps macOS keep track of the SMART status of all your drives by default, and there are several tools that read this status with varying levels of detail.

    Check Your SSD Health Using SMART Status System Reports

    The process to check your SSD health on your Mac is straightforward and takes about a minute.

    1. Click the Apple icon in the upper-left corner (in the toolbar), then hold the Option key. You’ll see “About this Mac” change to “System Information.”

    How to scan and diagnose hardware issues on your mac with apple’s built-in tools

    2. When the screen opens, find the Storage panel under the Hardware section in the left-hand tree directory:

    How to scan and diagnose hardware issues on your mac with apple’s built-in tools

    3. Next, select the drive you want to examine from the list on the right side.

    4. You’ll find the SMART status at the bottom of the right panel, often as the last item in the list.

    How to scan and diagnose hardware issues on your mac with apple’s built-in tools

    “Verified” in this instance means the drive has no reported problems. “Failing” means the drive has an error that will soon become “Fatal”. SMART’s numerical error code system provides more information about the drive’s specific calamity, but the broad headline delivered by macOS is enough for guessing how soon a drive will fail.

    Also read: How to Enable TRIM for 3rd Party SSDs on Mac

    Check Your SSD Health Using smartmontools

    If you have Homebrew installed, you can install smartmontools to check the SSD health on your Mac. This will display the SMART status through the Terminal.

    1. Open your chosen Terminal and run the following command to install smartmontools with Homebrew:

    2. Next, run diskutil list to find the drive identifier for the volume you want to test:

    How to scan and diagnose hardware issues on your mac with apple’s built-in tools

    As an aside, you can also find the drive identifier in System Information by looking for the BSD Name.

    How to scan and diagnose hardware issues on your mac with apple’s built-in tools

    3. run the following command to get the SMART status for the specified drive:

    Note that you’ll want to replace the placeholder BSD name with your own. Regardless, this will produce a detailed SMART report in standard output.

    How to scan and diagnose hardware issues on your mac with apple’s built-in tools

    If you want to save the SMART report to disk, you can send it to a text file using the > control character:

    This report will offer a detailed look at the drive’s health. The most relevant data is the verdict, which appears halfway down the report. At the bottom, the vendor-specific SMART status can provide a glimpse into the drive’s deeper condition.

    Check Your SSD Health with DriveDx

    If you’ d like a premium solution to check your SSD health on your Mac, DriveDx is a good option.

    It’s a drive diagnostic tool that provides the most detailed picture of your SSD’s health. This app can scan all of your connected drives and provide a complete picture of your storage system’s health.

    How to scan and diagnose hardware issues on your mac with apple’s built-in tools

    While the app is open, it continually monitors the SMART status for indication of failure or problems. It’s the easiest way to a detailed picture of your disk’s health without sifting through technical logs.

    Also read: 3 Ways to Fix the Service Battery Warning on Mac

    Wrapping Up

    It’s a good idea to carry out a casual check of your SSD health for your Mac, but it shouldn’t be an obsession. The above methods allow you to quickly check your SSD health on your Mac.

    If you’re still running an HDD and want to upgrade, we can show you how to do it.

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    Clean & protect your computer

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    Delete gigabytes of system junk, broken data, and caches.
    Find large and old files scattered across all folders.
    Visualize your storage and find your largest space-wasters.

    Protect your Mac

    Scan your Mac for the latest viruses and adware.
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    Mac is a trademark of Apple Inc.
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    I have a one-year old iPhone 5 and it’s battery performance has dramatically decreased over the last few months. As I could use my iPhone for over 24 hours a year ago, the lifespan has halved by now.

    I’m not interested in the reason why or answers like “it’s normal“, but in the following. A friend of mine told me Apple has a diagnostic tool at it’s Genius bars to check the health of the battery. Is this a rumor or is the tool real? And if so, can it be bought by consumers (I don’t thinks so, but you never know :))

    7 Answers 7

    It is real. One of the Genius perform the diagnosis right in front of me. If memory serves, it goes like this:

    1. With your iPhone, or whichever iDevice, connected to the Apple Store’s wifi, “Apple Store”, open Safari, and connect to URL “diagnosis.apple.com” (or diagnostics)
    2. A page will show up, with a text entry bar for the Genius to enter a verification code.
    3. The genius will pull up a page from his “Genius” iPod touch, (the one with bar code scanner), and possibly clicked a certain icon, which leads him to the verification code. I assume that the verification code is changing over time.
    4. After entering the code into your device, there goes the diagnosis page.

    In the brief moment he was looking at my iPhone, I was able to see the maximum capacity (by design) and the capacity left, which is 98% in my case. By this figure he will determine whether your iPhone’s battery needs a replacement. If not, he will suggest that you restore the iPhone and the battery issue (if any) will likely go away.

    I asked the Genius whether that’s a secret page, he just calmly answered that it’s just a tool for them to do the diagnosis.

    So no, you cannot purchase it, as it is simply an internal webpage which requires Genius verification.

    As a side note, informed by the same Genius, the easiest way to tell whether your battery/system has problem with battery life is to go to Settings – General – Usage in your device.

    Look at the “Time Since Last Full Charge” section, it tells you how long the device has been used and how long it has been on standby. If the two figure are very close, e.g. 2 hours for usage and 2 hours 10 minutes for standby. But you clearly remember that you haven’t been “using” the device for 2 hours, but only let in stay in sleep mode. This means that something running in the background is draining your power, and your device is never sleeping.

    In this case, the Genius will suggest that you restore the iPhone (and restore from iCloud or iTunes if you wish) and the problem will most likely go away.

    Update

    After visiting the Genius bar again, I saw a genius helping a customer on similar issue and I took a picture.

    If you’ve never run a diagnostics test on your own smartphone, it’s worth doing—especially as your phone starts to show its age, or if you purchased a “new” smartphone secondhand and want to get a feel for its condition.

    Diagnostic tools are also helpful for when your device becomes less efficient, but you can’t quite pin down why. Instead of using guesswork to troubleshoot the various features on your phone until you stumble on a solution, a diagnostics scan can highlight exactly what’s wrong with your phone, or at least provide enough data to point you in the right direction.

    Unfortunately, finding the built-in diagnostics tools on Android smartphones and iPhones can be difficult, and some devices don’t even have very good diagnostic options to begin with (if at all). But you can always turn to third-party apps for help.

    Built-in diagnostics tools

    Android

    Most Android phones have a few simple diagnostics tools hidden in the OS, but they vary between devices. The tools are found by typing codes into your phone app’s dialer—kinda like inputting cheat codes in a video game. Type in the codes below, and the menus should automatically open.

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    Here are the two main codes usable on most Android devices:

    • *#0*#hidden diagnostics menu: Some Android phones come with a full diagnostics menu. You’ll be able to run a check-up for at least some of the phone’s hardware. However, this code isn’t available on all phones—nothing happened when I tried the code on a Pixel XL, for example, though the menu appeared on a Samsung Galaxy S9. For those that do have access, it’s a handy trick. The menu offers a number of standalone tests to check the performance of your phone’s various parts, such as your screen (touch recognition, color accuracy), your cameras, sensor, and physical buttons like the power and volume controls.
    • *#*#4636#*#* usage information menu: This menu will show up on more devices than the hidden diagnostics menu, but the information shared will be different between devices. At the very least, you should be able to see app usage history; real-time wifi and cellular network connection stats; and basic phone information like the current service carrier, phone number, et cetera.

    You don’t have to press the call button or anything else to open the hidden menus, they’ll just open automatically. If nothing happens when you type in the code, then your phone doesn’t have the feature. Similarly, some devices don’t provide very helpful information, like the aforementioned Google Pixel (which relies on Google collecting diagnostic information from your phone in the background). If that’s the case, then jump on down to the next section for some recommendations for third-party diagnostics apps.

    There are employers and IT departments out there that take an extreme approach to monitoring what the staff gets up to on company-owned equipment. You may not be able to change the policies of the firm that you work for, but you can at least check if and how you’re being watched.

    Obviously, we can’t provide a one-size-fits-all guide as we’re not privy to the inner workings of every single company out there, but we can tell you some of the best methods for finding out whether or not your computer has any spyware on it, and what your options are for dealing with it.

    Whether or not you think this is fair, under US law it’s certainly legal for employers to monitor employees on company hardware, even down to the keystroke, if necessary. While it’s certainly polite for employees to be notified of the monitoring that goes on, this is only required in some states —so it might be happening without your knowledge.

    Presumably, if you’ve been told that you’re being watched, you don’t need this guide. You might even be able to see the monitoring software running in the corner of the screen.

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    If not, the best way to see what’s running on a Windows system is the long-serving Task Manager, which you can call up with Ctrl+Shift+Esc (or by searching from it in the taskbar). Switch to the Processes tab: Most spyware tools worth their salt will be able to stay hidden from the Apps list, but check Background processes too, especially for programs using up a lot of system resources.

    A quick web search for any entries you don’t recognize might turn up the name of a known spyware application or two—though maybe use your private, personal phone for the searching, while not on company wifi.

    The Start-up tab is worth investigating too: Monitoring software will need to be loaded into memory every time the computer reboots, so it should be listed here. Again, you can look up any obscure names you don’t recognize.

    Via the Windows command prompt you can check which programs and utilities are accessing the web. Run a search in the taskbar for “cmd”, then right-click on the Command Prompt result and choose Run as administrator (which you may or may not be able to do on a company computer). If and when the window opens, type the command [ netstat -b -n ] and hit Enter.

    What you’re looking at are all the executables (programs) accessing the internet from your computer. Again, some detective work might be required to identify the ones that aren’t just labeled “chrome.exe” or something equally easy to interpret.

    Another option is to run some kind of on-demand antivirus or antispyware package on your machine, though you’re obviously going to run into problems if you’re limited in terms of what you can install on company computers. Some monitoring tools can be detected in this way and some can’t, but it’s worth a try.

    Emsisoft Emergency Kit is one of our favorite tools for this particular job, because it’s free, lightweight, and simple to run. We also like HouseCall from Trend Micro, but it’s geared more towards malware that’s trying to do some actual damage than the spyware we’re talking about here. SuperAntiSpyware is another program that’s always worked well for us, and it’s free for running manual scans.

    If you’ve been issued a Mac machine by your employer rather than a Windows one, the principles are the same. In place of Task Manager, there’s Activity Monitor, which you can call up from a Spotlight search (hit Cmd+Space to bring up Spotlight).

    The CPU tab is a good place to start, though Network is useful as well: Here you see everything running (and connecting to the network) on macOS, so you can pick out the apps and utilities you know all about and those that are a little more on the suspicious side. If there are any you’re not sure about, run a search on them from your phone (off the company network) or when you get back home.

    To check which applications are starting up with macOS, you need to head somewhere else. From the Apple menu click System Preferences and then Users & Groups. Under your username you’ll see a Login items tab, which will show you programs that always start up when you reboot. Spyware programs won’t always be visible here, but you might see something.

    As for monitoring programs accessing the web, the macOS equivalent of the command prompt is, of course, the terminal, which you can also find via Spotlight. You’ve got a host of options here, but we’re indebted to OSXDaily for a simple and useful one: Type: [ lsof -nPi | cut -f 1 -d “ “| uniq | tail -n +2 ] to see the name of every app looking to get online.

    There are also third-party applications that can help you with your spyware hunting, just like Windows. The aforementioned Trend Micro HouseCall is available for Mac and will do a simple on-demand scan for you, and we’re also big fans of the free KnockKnock : It can find apps launching with macOS, as well as plug-ins, scripts, extensions, and other add-ons you might not know about, making it a fine spyware hunter.

    To help determine if a system problem is caused by hardware or software issues several diagnostic tools are available, depending on your operating system. The Windows® Memory Diagnostic tool is built into Windows Vista and later, is simple to use and provides a great first step for narrowing down the problem. Microsoft® support features walkthroughs for using their testing utility depending on your Windows version.

    If you are using another operating system, we recommend Memtest86+® to determine if memory is causing issues.

    Rember is a free front-end for the Mac OS X® operating system to run an OS X variation of Memtest easily and quickly, available for download here.

    Otherwise, Memtest86+ is a standalone memory testing program that can test your memory independently from the operating system to eliminate the possibility of drivers or other software causing the errors.

    1. Memtest86+ can be downloaded free of charge here
    2. Click the link Download the zip file (Download – Pre-Compiled Bootable ISO) and extract the contents
    3. Use your preferred CD burning or .ISO management software to create a CD or bootable USB drive from the downloaded ISO file. Please note that simply copying the ISO file to the media will not work. The ISO file is a disk image and is used by the burning software to create the Memtest86+ disk. For more information how to do this consult the burning software’s documentation. Leave the CD or USB drive in place and restart the system
    4. When your system reboots the system will auto-load Memtest86+. This software will then start to test the memory and report if it finds any errors. If the disk fails to load and the operating system continues to load as normal please make sure that the CD-ROM/USB device is set as the first boot device within the system BIOS
    5. When Memtest86+ is running, it will run through various different tests. After it has finished the tests it starts all over again in a continuous loop. To exit Memtest86+ and allow the system to boot remove the CD/USB drive and press Escape (ESC)

    If any of the above tools show errors then the memory might have developed a fault or is incorrectly setup in the BIOS, and our support options can assist you in further troubleshooting or a warranty replacement of parts. If no errors are reported, the problem could be driver or software related; please update all hardware drivers or in the worst-case scenario reinstall the operating system.

    by Shan · December 14, 2021

    Independent security researchers have once again come to the rescue of System admins by creating tools which can scan for log4j vulnerabilities in different Java installations as well as applications. Also some of these tools can also inspect JAR & WAR archives to check for class files that might be vulnerable.These are some of the tools that can be used to scan for the log4j vulnerabilities (The list would be updated then and there)

    Local log4j vuln scanner: This is written in Go language and can be directly executed via binaries which can be downloaded from here for Windows,Linux and Mac OS. Once you download it place it in the folder or path where you want to scan the files for log4j vulnerability and execute the below commands as shown

    Here in the below example, I am scanning SonarQube files which shows Elastic search is vulnerable as it has references to log4j library,

    log4shell-detector : This tool is a simply one that has been written using Python. All you have to do is copy download the Python file from here and execute it as shown below

    How to scan and diagnose hardware issues on your mac with apple’s built-in tools

    Once it is scanned, it will show the list of files that are affected and how many exploitation attempts are deducted at the end as shown below

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    Is your hard drive going bad? Here are some simple ways to check whether your hard drive is failing (and how to save or recover your data when it is).

    Image credits: Anyka/Shutterstock

    The average lifetime of a stationary hard drive is around five to ten years. Less if the drive is exposed to changing temperatures, humidity, or external shocks. Realistically, your laptop hard drive becomes prone to failure after three to five years, and this is true for SSDs, too. Getting nervous, yet?

    How to Tell If Your Hard Drive Is Failing: 3 Signs

    In the best of cases, hard drives fail gradually, leaving you enough time to grab a copy of your data and replace them before facing a fatal failure.

    But how exactly can you tell if your hard drive is failing? Well, it’s a good thing you’re here!

    1. Slowing Computer, Frequent Freezes, Blue Screen Of Death

    This trifecta of a PC breakdown can have a million different causes, and a failing hard drive is one of them. If these problems occur after a fresh installation or in Windows Safe Mode, the root of the evil is almost certainly bad hardware, possibly a failing hard drive.

    To exclude an issue with your hard drive, you can run a host of diagnostic tools, but you should start by looking into your system’s S.M.A.R.T. (Self-Monitoring, Analysis, and Reporting Technology) data. Note that while Windows is automatically collecting this information in the background, it’s notoriously unreliable in predicting hard drive failure, and you may experience a critical malfunction before a S.M.A.R.T. warning kicks in.

    To manually check your drive’s S.M.A.R.T. status, you’ll need a third-party tool like CrystalDiskInfo. Under Disk, select the disk to scan and note your disk’s health status.

    If you can exclude hardware issues after running further diagnostic tools, you should proceed to resetting or reinstalling your operating system. Windows 10 has an option to keep all your files, but, just in case, you should prepare a backup anyway. Scroll down for more information on backups.

    2. Corrupted Data and Accumulating Bad Sectors

    Corrupted data can show up in countless different ways. If you repeatedly see one of these symptoms, chances are your hard drive is gradually failing:

    • Scrambled file or folder names
    • Random error messages when opening, moving, or saving files
    • Files that fail to open
    • Corrupted data within your files
    • Disappearing files or folders

    Data corruption happens at the point of data creation or storage. It could be that a virus is interfering with your files, but it could also just be bad sectors on your hard drive.

    Bad sectors are areas of the hard drive that don’t maintain data integrity. Windows automatically masks bad sectors, so you won’t notice them unless you run into issues with corrupted data. On a failing hard drive, bad sectors can accumulate rapidly, meaning you’ll see these issues more often.

    A Windows command tool called CHKDSK can help you recover data from bad sectors and exclude them from future use. For a quick scan, press Windows + E to open File Explorer, navigate to This PC, right-click the failing disk or partition, and select Properties.

    Within Properties, switch to the Tools tab and click Check. If Windows notes that “You don’t need to scan this drive,” you can click Scan drive to run the tool anyway. Once it’s done, you can choose to fix any errors it found.

    A more thorough CHKDSK scan can take a long time and requires a reboot. When you can spare your computer for a night and a day, open an Administrator command prompt, i.e., right-click Start and select Command Prompt (Admin), then run the following command to recover data and fix errors: chkdsk /r c: (for your C: drive). Enter Y when queried, and CHKDSK will run once you restart your computer.

    3. Strange Sounds

    When you hear strange noises coming from your hard drive, you’re in trouble. A repetitive sound known as the click of death is caused by the head trying to write data, failing, returning to its home position, and retrying over and over again. Grinding or screeching noises indicate that parts of the hardware, such as the bearings or spindle motor, are failing.

    At this point, you’re lucky if you can recover data from your hard drive.

    I Think My Hard Drive Is Failing. What Shall I Do?

    So you suspect that a hard drive failure is just around the corner? The truth is, it probably is. And here’s what you can do.

    Step 1: Back up Your Data

    The best thing you can do is always keep backups of your data on a second drive and be ready to get a replacement.

    It’s unlikely for two drives to fail at the same time. An exception would be natural disasters like floods or fires. For these cases, we recommend keeping a copy of your most important data in a different physical location, for example, at work or with a family member or a friend.

    You could also use an online backup solution like OneDrive or Google Drive. If you’re using Microsoft Office, consider upgrading to a Microsoft 365 subscription, which gives you the latest version of Office and 1TB of OneDrive storage.

    Step 2: Replace the Drive

    When you’re ready to replace your SSD or HDD, refer to our guide on how to pick the right drive and install it.

    Step 3: Safely Dispose of Your Old Drive

    Before you throw out your old drive, remember to wipe the drive to prevent a third party from recovering your data.

    Whatever you do, please don’t toss your failed drive in the trash. Electronics contain precious metals and toxic components that don’t belong in a landfill. Bring your hardware to a local electronic recycling center, ask your electronic store whether they take it back, or use a program like Western Digital’s free electronic recycling program, which will give you 15% off on your next purchase.

    Don’t Let Your Hard Drive Fail!

    Do not rely on signs or software to tell you whether you have a failing hard drive. It is more likely than not that it will fail unexpectedly and without any warning signs whatsoever. Rather than trying to forecast something that is even less predictable than the weather, you should rely on backups.

    If it’s too late, here’s how to diagnose and fix a dead hard drive to recover data. And if things remain a lost cause, you still may be able to get some use out of that dead hard drive.