Some Intel Macs without T2 chips have firmware updates with last week’s security updates. Here are the details.
Apple silicon
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.
New series aimed at troubleshooting Apple silicon Macs, with additions for recent Intel models. You’re invited to contribute your experience and knowledge please.
Power-on self-test routines are widespread in electronics, and one of the oldest features in personal computers. Do Apple silicon Macs run them?
Why should you trim an SSD? How to tell whether an SSD needs trimming, finding out whether it has trim support, and whether it does trim.
T2 and Apple silicon Macs always encrypt the Data volume in internal storage. So why bother with enabling FileVault? And can you do that on external bootable disks?
What should you do if a firmware update goes wrong? Here’s a guide to avoid panic, whether your Mac is Intel, has a T2, or M-series chip, and for Studio Displays.
To boot from an external disk, Apple silicon Macs need them to have an Owner. Here’s how to investigate ownership, and how it works.
macOS has changed fundamentally. So has troubleshooting it. Secure Boot, the SSV, and Gatekeeper checks bring changes in strategy.
The Eclectic Light Company 