If you’re lucky, it should restart into Recovery Assistant. Otherwise advice on how to manage a boot loop or freeze, and how to disable 3rd party kernel extensions.
diagnostics
This can now test and search any regular volume that’s connected to your Mac and mounted in /Volumes, using either NSMetadataQuery in the API, or mdfind instead.
New app tests Spotlight indexing and search of local files across 15 test files and two search methods. This should provide valuable clues for diagnosis.
Your Mac unexpectedly restarts, and a little after logging in you see a Panic Alert. Before sending that to Apple, save a copy and follow this guidance, including how to read a panic log.
A few years ago, there were 3 tools for diagnosing network problems: Network Utility (gone in Big Sur), Wireless Diagnostics, and Network Diagnostics (also gone). And what can networkQuality tell you about Private Relay?
How to capture the panic log, immediate actions likely to help make a diagnosis, and how to read the panic log.
What to do when your Mac panics during booting, and enters a boot loop, or when it simply fails to get to the login window.
Power-on self-test routines are widespread in electronics, and one of the oldest features in personal computers. Do Apple silicon Macs run them?
If there’s a problem, you may try Recovery mode. What do you do when that proves to be a problem? Solutions for Intel and Apple silicon Macs.
Is reinstalling macOS still a useful solution to problems? What about installing macOS updates, or resetting the NVRAM and SMC?
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