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.
You might be aware that Apple's current Mac operating system is based on UNIX.but the company's history with the platform goes back farther than you might.
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Prepare your Mac
- Shut down your Mac.
- Disconnect all external devices except keyboard, mouse, display, Ethernet connection (if applicable), and connection to AC power.
- Make sure that your Mac is on a hard, flat, stable surface with good ventilation.
Start Apple Diagnostics
Determine whether you're using a Mac with Apple silicon, then follow the appropriate steps:
Mac Os Mojave
Apple silicon
- Turn on your Mac and continue to press and hold the power button as your Mac starts up.
- Release when you see the startup options window, which includes a gear icon labeled Options.
- Press Command (⌘)-D on your keyboard.
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.
You might be aware that Apple's current Mac operating system is based on UNIX.but the company's history with the platform goes back farther than you might.
Dec 26, 2017 RELATED: 8 Mac System Features You Can Access in Recovery Mode. Your Mac's Recovery Mode is a treasure trove of useful tools, and it's the easiest way to wipe your computer and start from scratch. Shut down your Mac, turn it on while holding down Command+R. Your Mac will boot into the recovery partition. Bekijk het profiel van Jorn de Koning op LinkedIn, de grootste professionele community ter wereld. Jorn heeft 5 functies op zijn of haar profiel. Bekijk het volledige profiel op LinkedIn om de connecties van Jorn en vacatures bij vergelijkbare bedrijven te zien. Power Mac G4 with UAD-1 PCI card/OS 10.2 and 'Classic' (OS 9.2) $100 (Springfield) pic hide this posting restore restore this posting. Favorite this post Apr 15. Strong information technology professional skilled in Mac OS X Server, System Deployment, ConnectWise, Ethernet, and Linux. Activity We understand that small and mid-sized businesses need to be.
Prepare your Mac
- Shut down your Mac.
- Disconnect all external devices except keyboard, mouse, display, Ethernet connection (if applicable), and connection to AC power.
- Make sure that your Mac is on a hard, flat, stable surface with good ventilation.
Start Apple Diagnostics
Determine whether you're using a Mac with Apple silicon, then follow the appropriate steps:
Mac Os Mojave
Apple silicon
- Turn on your Mac and continue to press and hold the power button as your Mac starts up.
- Release when you see the startup options window, which includes a gear icon labeled Options.
- Press Command (⌘)-D on your keyboard.
Intel processor
- Turn on your Mac, then immediately press and hold the D key on your keyboard as your Mac starts up.
- 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:
When testing is complete, Apple Diagnostics shows the results, including one or more reference codes. Learn about Apple Diagnostics reference codes.
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
Ld46_charger Mac Os 11
Hidden reality mac os. On an Intel-based Mac, if you can't start Apple Diagnostics with the D key, try these solutions: Attention mac os.
Ld46_charger Mac Os Catalina
- 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.
