Do you need to back it up when the problem is minor? Should you erase its internal storage? Anything else you need to do?
T2
Still very useful procedures for Intel Macs, resetting the SMC within a T2 chip is more complex. Used wisely they can resuscitate a failing Mac.
Is your Mac likely to receive firmware updates in future? How can you check whether its firmware is up to date? What happens in Sonoma?
Why do macOS updates keep updating firmware? Is it full of bugs or what? And just what does firmware do?
When should you put your Mac into DFU mode, hook it up to another Mac running Configurator, and revive or restore it?
Since November 2020, every T2 and Apple silicon Mac that has booted Big Sur or later in Full Security mode has check the integrity of its 9 GB SSV.
Some Intel Macs without T2 chips have firmware updates with last week’s security updates. Here are the details.
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.
Is that Mac completely dead due to a severe failure, or could it just be in DFU mode? They aren’t easy to distinguish on most Macs.
Power-on self-test routines are widespread in electronics, and one of the oldest features in personal computers. Do Apple silicon Macs run them?
The Eclectic Light Company 