What should you do when you try to restart in Diagnostics Mode and can’t? And how to check and restore a Recovery partition.
hardware
Apple’s latest Macs have T2 chips and SSDs which are not user-replaceable. Isn’t buying one courting with disaster?
What happens in your Mac when you press the Power button? Before it loads the EFI firmware, it goes through self-testing, and initialising key chips.
Should you worry about Apple and all those UUIDs? Some claim that they are being used to track you and what you do on your iPhone and Mac.
SSD or hard disk? Western Digital, HGST or Seagate? Multiple smaller capacities, or one big disk?
Shutdown cause codes, wake reasons, ACPI, and sleep states – diagnosing problems from hardware events.
A starting point for diagnosing and fixing your Mac problems, with links to key articles here.
How to interpret the code numbers written into your Mac’s log to indicate the reason for shutting down, restarting, or going to sleep.
Hard drives are still best value for higher capacity storage. Here are some tips for purchasing them, based on vast experience.
How can you tell whether your Mac supports Continuity, whether you bought an app from the App Store, and diagnose extension problems?
