How to Roll back to a known sta­ble ver­sion

Mac|Life - - FEATURE -

macOS Re­cov­ery

If macOS won’t load, restart hold­ing C+R af­ter pow­er­ing on and your Mac will start from its built-in Re­cov­ery partition. Many Macs since 2010 can fall back on In­ter­net Re­cov­ery, in­di­cated by a globe in­stead of the Ap­ple logo.

Re­cov­ery op­tions

Re­lease the keys when one of those ap­pears. When the macOS Util­i­ties menu loads, you can re­in­stall the lat­est macOS that was on your Mac, check and re­pair the disk us­ing Disk Util­ity, or re­store from a Time Ma­chine backup.

Re­vert to start

Hold Alt+Cmd+R at startup to up­grade to the lat­est com­pat­i­ble macOS. If you have Sierra 10.12.4 or later, press Shift+Alt+Cmd+R to re­in­stall your orig­i­nal macOS, or the clos­est avail­able — great for rolling back to what works.

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