Apple Service Diagnostic CD is designed to run both Open Firmware and Mac OS X tests from a single CD. Apple Service Diagnostic (OF) performs low-level tests of hardware directly and does not require an operating system to run. Apple Service Diagnostic (OS) uses the Mac operating system to perform tests. Explore the world of Mac. Check out MacBook Pro, iMac Pro, MacBook Air, iMac, and more. Visit the Apple site to learn, buy, and get support.

1. Apple Hardware Test Download Mac 10.14
2. Apple Mac Hardware Test
3. Apple Hardware Test Download Mac Download

In this video, I show you how to run the Apple Hardware Test. This test is for Macs older than June of 2013. IMPORTANT: If your Mac was released after June 2. Nov 15, 2019 Click the Hardware Test tab. The Apple Hardware Test supports two types of testing: a standard test and an extended test. The extended test is a good option if you suspect an issue with your RAM or video/graphics. Generally, though, starting with the shorter, standard test is a good idea. Click the Test button.

Clean and Optimize Your Mac to Improve Performance with Outbyte MacRepair

In order to use the program, it needs to be purchased and activated first.

Developed for macOS

Most Mac users enjoy several years of trouble-free experience, but eventually, time will come when hardware problems arise. Although it rarely happens, problems can be caused by a motherboard issue, a failing hard drive, a GPU problem, or lack of memory space. Fortunately, Apple has a way to detect, prevent, and solve any hardware-related issue. Apple Hardware Test is the first step. You can use it to check if there are serious hardware issues to deal with. Don’t worry, because you can run the test yourself. We will teach you how below.

What Mac Models Can Run Apple’s Internet-Based Hardware Test?

Not all Mac models can run the Internet-based Apple hardware test. Some MacBook models need to use a local version of the hardware test, which has to be installed on the hard drive or saved on OS X DVD. Other Macs manufactured after 2013 can use the latest version of the Apple hardware test, which is called the Apple Diagnostics test. Here’s a guide on how to use Apple Diagnostics test. As for the only Mac models that can use the web-based version of the Apple hardware test are as follows:

• 11-inch MacBook Air 3 (late 2010 through 2012)
• 13-inch MacBook Air 3 (late 2010 through 2012)
• 13-inch MacBook Pro 8 (early 2011 through 2012)
• 15-inch MacBook Pro 6 (mid-2010 through 2012)
• 17-inch MacBook Pro 6 (mid-2010 through 2012)
• MacBook 7 (mid-2010)
• Mac Mini 4 (mid-2010 through 2012)
• 21.5-inch iMac 11 (mid-2010 through 2012)
• 27-inch iMac 11 (mid-2010 through 2012)

It is important to note that the mid-2010 through early 2011 Mac models may require to update the EFI firmware before you can run the web-based Apple Hardware Test. If you are uncertain if you need to update the EFI firmware or not, you can do the following:

Apple Hardware Test Download Mac 10.14

• Go to Apple menu and click About This Mac.
• A new window will open. Click the More Info button.
• If your Mac is running in OS X Lion or the later version, select System Report. Otherwise, proceed to step 4.
• Another window will open. Highlight Hardware in the left portion of the screen.
• On the opposite corner of the screen, take note of the boot ROM version number of your Mac and the SMC version number.
• Once you have these details, go to the EFI and SMC Firmware Update page on Apple’s website. Compare the versions you have with the latest available. If your Mac is running on an older version, you need to download the most recent version on the same web page.

How to Use the Internet-Based Apple Hardware Test

As soon as you have verified and confirmed that your Mac is capable of running the Internet-based Apple Hardware Test, you can start using it. Here’s how:

• Turn off your Mac first.
• If you are running a MacBook, connect it to an AC power source. Do not run the test with only your MacBook’s battery as the power source.
• Press the Power button while holding down the Option and D keys. Continue until the Starting Internet Recovery message pops up on your display.
• Wait for a few seconds. You will soon be prompted to select a network. Use the drop-down menu to choose from the list of available network connections.
• Select a wireless network and enter the password if asked. Press Return or Enter. You can also click the checkmark button on your display.
• As soon as you are connected to your chosen network, you will see a message on your screen that says, Starting Internet Recovery. This will take a while because the Apple Hardware Test will be downloaded to your Mac. Once it is completed, you will be prompted to select a language.
• To select a language to use, use the Up and Down arrow keys or the mouse cursor.
• The Apple Hardware Test will then continue to check what hardware is installed on your Mac. Again, this will take time.
• Before you proceed with the actual test, it’d be better if you verify first what hardware was found so you can ensure that all your Mac’s components are correct and accounted for. Check if the exact amount of memory is displayed, along with the graphics and CPU specs. If you suspect that something is wrong, verify your Mac’s configuration by going to Apple’s support site. If the displayed config does not match with what your Mac model’s configuration should be, your device might be failing. To verify your Mac’s hardware specs, navigate to the Hardware Profile tab.
• If all configuration details are correct, proceed with the testing by going to the Hardware Test tab.
• Note that the Apple Hardware Test can support two different types of testing; a standard test and an extended test. While the standard test is generally a good option, the extended test is highly recommended, especially if there is an issue with your Mac’s graphics card or RAM.
• To run the standard test, select the Standard Test option and click the Test button. At this point, the hardware test should start. It will take several minutes to complete, so just be patient. Do not worry if you hear your Mac’s fans rev up and down. That’s normal during the hardware testing process.
• Once the test is done, a list of potential issues or a No trouble found message will be displayed in the test results pane. If there is an error, check what it is about. We listed some of the most common error codes below alongside their meanings:
  • 4AIR – AirPort wireless card
  • 4ETH – Ethernet
  • 4HDD – Hard disk (includes SSD)
  • 4IRP – Logic board
  • 4MEM – Memory module (RAM)
  • 4MHD – External disk
  • 4MLB – Logic board controller
  • 4MOT – Fans
  • 4PRC – Processor
  • 4SNS – Failed sensor
  • 4YDC – Video/Graphics card

These error codes generated by the Apple Hardware Test seem to be cryptic, and in some cases, only certified Apple service technicians can understand them. But because most of these codes are recurring, they’ve become known.

• If no problem was found, you could continue running the extended test. It can detect graphics and memory problems better than the standard test. To do the extended test, select the Perform Extended Testing option and click the Test button.
• If by any chance, you’d like to stop the test, just click the Stop Testing button.
• Once you are done using the Apple Hardware Test, end it by clicking the Shut Down or Restart button.

If no error was found after the test and your Mac is still experiencing problems, then you can check your system. It might be loaded with files you don’t need, or your RAM is taken up by unnecessary programs and apps. To fix the problem, download third-party tools like Tweakbit MacRepair.

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:

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.

Apple Mac Hardware Test

Related links

Apple Hardware Test Download Mac Download

• All AppleCare Knowledge Base documents related to the Apple Hardware Test.