Introduced in Mac OS X 10.7, it remained an HFS+ partition until High Sierra. With Mojave, it became an APFS volume, except for M1 Macs.
Recovery System
It can be valuable to know how to restart, run a command, and open an app using Terminal, AppleScript, and different methods in the Finder.
When an app ran fine, but crashes in El Capitan, it may be SIP’s fault. Here is how to check, and more about SIP.
Like all sophisticated systems, Macs do sometimes go wrong. Indeed in some hands they always seem to be […]
The Eclectic Light Company 