Booting Apple Hardware Test from macOS install disc There’s no functional difference between local and Internet-based versions of Apple Diagnostics and Apple Hardware Test modes.
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.
Macs introduced after June 2013 will use Apple Diagnostics mode instead. On Mac computers introduced before June 2013, you will use Apple Hardware Test, an older version of Apple Diagnostics mode. Apple Diagnostics or Apple Hardware Test mode?Īpple 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.
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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.īut that may not be necessarily enough and Recovery Mode may be unable to help you get your Mac back to working order.Īs 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 gives you a number of options if you need to troubleshoot software and hardware issues that might be plaguing your Mac.