The Mac has completed its self-test routines, and now prepares to load the EFI firmware or ‘boot loader’. Where it finds it, what it needs, and how Secure Boot changes this.
EFI
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.
As Apple still hasn’t provided any detailed information about security or other updates which were provided in its […]
All about firmware, the SMC, NVRAM, and the new T2 chips which come in some models of Mac. When and how to reset, and more.
How to check it, what the current version is, what to do about any problems. All your questions answered – even on ethernet firmware now.
When did your Mac last check its firmware? Probably only a few days ago. How eficheck keeps our Macs stable and safe.
At about 777 MB, Security Update 2018-003 for Sierra looks very substantial. So what’s inside it? Security updates […]
Looking through the more than 2 GB contents of the macOS 10.13.5 update, this is another very substantial […]
Apple was a little more forthcoming in the list of improvements and fixes in macOS High Sierra 10.13.4, […]
Overnight (UTC), Apple has released the update to High Sierra 10.13.4, Safari 11.1, and security updates to El […]
The Eclectic Light Company 