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.
T2
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.
Failed EFI firmware updates should be self-healing in recent models, but what do you do if your T2 Mac messes up a firmware update? Full details revealed.
By default, your Mac’s cooling fans run at full blast. Only the control system slows them down when it is safe to do so. How to diagnose and fix its problems.
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 much more is a Mac with a T2 chip? What does it actually do? Who might need its features? What are its problems?
New MacBook Pro models (2018) with a Touch Bar incorporate the same T2 chip which is built into […]
The Eclectic Light Company 