Fed up with your M1 MBP always starting up, or waking from sleep, when you open its lid? How might you change that behaviour?
NVRAM
How to discover what’s stored in your Mac’s NVRAM, how to reset it in Intel Macs, and how you can changes its variables.
How ready are M1 Macs now for general use? There are still problems with docks, external boot disks, and using one external boot disk with multiple Macs.
There’s no SMC, so you can’t reset it. Although there’s still NVRAM (PRAM), that can’t be reset either: full details of both for M1 models.
One feature that many users miss on more recent Mac models is the startup chime. Although once a […]
How to reset them, and what they do. Includes coverage of the SMC functions in T2 chips, and how to reset them too.
Diagnostic, Recovery, Safe, Startup Manager, Verbose, reset SMC/NVRAM, firmware restore, Target Disk/Display, Single-User (SUM) in outline.
Listing of known NVRAM variables and their usage/meaning, together with notes on how to change them.
Important info about resetting the NVRAM with a firmware password, and new procedures for resetting the SMC in Macs with T2 chips.
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.
The Eclectic Light Company 