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On these new Macs, Target Disk Mode will be retired in favor of Mac Sharing Mode. Now that Apple is holding all the cards, the company has built a new boot process, based on iOS’s existing secure boot process, but modified to support those features that Mac users expect, such as different macOS boot drives, multiple versions of the operating system, and macOS Recovery itself. From here you’ll be able to fix a broken Mac boot drive, alter security settings, share your Mac’s disk with another computer, choose a startup disk, and pretty much everything else you used to have to remember keyboard shortcuts to do. Holding down that button at startup will bring up an entirely new macOS Recovery options screen. On desktops, presumably it’s the physical power button.) (On laptops, that’ll be the Touch ID button. As described Wednesday in the WWDC session Explore the New System Architecture of Apple Silicon Macs, these new Macs will only require you to remember a single button: Power. With the advent of Macs running Apple-designed processors, things will get a whole lot simpler. Is it Command-Control-P-R or Command-Option-P-R that zaps the PRAM? Is that still even a thing? Is it Command-S for Recovery Mode-or wait, that’s Single User Mode, it’s Command-R for Recovery mode, Command-T for Target Disk Mode, Option to choose a startup disk. Macs with Apple silicon will get new, refined boot and recovery modeĭoing unusual things at Mac startup has long required remembering keyboard shortcuts.