How to Put a Mac in DFU Mode (and Revive or Restore It)
DFU mode is the deepest recovery state on a Mac. DFU stands for Device Firmware Update, and you reach for it in the rare case where a Mac will not turn on, stops at a…
macOS Installer Download: Four Official Routes (and Which Reaches What)
A macOS installer download can come from four different places, all of them Apple’s. Which one works depends entirely on which version you are after. Apple also documents two more routes that upgrade or reinstall…
How to Create a Bootable macOS USB Installer
A bootable macOS USB stick lets you install or reinstall macOS on a Mac that will not start normally, set up several machines without downloading the installer each time, or do a clean install rather…