Apple Diagnostics

Apple Diagnostics is a troubleshooting utility for Macs. The current version comes pre-installed with macOS Big Sur (version 11) or later.
==Usage==
When running the software, it presents a progress bar similar to that shown when recent versions of macOS are booting. The vary basic user interface simply identifies any issues that may have been found, along with a reference code and the serial number of the Mac that can be shared with Apple Support staff.How to Use Apple Diagnostics to Test Your Mac by Tim Hardwick, MacRumors. 2021-10-20.
==History==
In 2013, Apple Diagnostics succeeded Apple Hardware Test (AHT), which was first released on CD-ROM for Open Firmware Macs produced in 2000 or later.Using Apple Diagnostics to Troubleshoot Your Mac's Hardware by Tom Nelson, LifeWire Updated 2017-03-06. Archived 2017-07-13.The Apple Hardware Test, The X Lab. Accessed 2022-06-14.Apple Hardware Test (AHT), by upekkha, GitHub. 2022-01-22.
==References==
==See also==
*Diagnostics mode (iPod), for non-iOS iPods.
*iOS Diagnostics, for iOS devices.
==External links==
*Use Apple Diagnostics to test your Mac at Apple Support (2020-11-20)
Category:Apple utilities
Category:macOS utilities
Category:Troubleshooting
Category:2013 introductions