Apple Hardware Test

Apple Hardware Test (AHT) was a troubleshooting utility developed by Apple for Open Firmware Macs produced in 2000 or later. It was originally released on CD-ROM.The Apple Hardware Test, The X Lab. Accessed 2022-06-14.
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==History==
In 2013, AHT was superseded by Apple Diagnostics.Using Apple Diagnostics to Troubleshoot Your Mac's Hardware by Tom Nelson, LifeWire Updated 2017-03-06. Archived 2017-07-13. The most recent version supports Macs running macOS Big Sur (version 11) or later.Use Apple Diagnostics to test your Mac, Apple Support]]. 2020-11-20.How to Use Apple Diagnostics to Test Your Mac by Tim Hardwick, MacRumors. 2021-10-20.
==References==
==External links==
*Apple Hardware Test (AHT) by upekkha at GitHub
Category:Discontinued Apple utilities
Category:Mac OS X utilities
Category:Troubleshooting