![]() ![]() You can access recovery without a partition using Network Recovery: hold Command+Shift+R while turning on your Mac and it will download the Recovery features for you. Failing that, you can create a bootable USB installer, and boot from that by holding "Option" while turning on your Mac. If neither of these options work, don't panic! You've got a couple of options yet. On those devices, hold "Option" while turning your computer on, then select the recovery partition instead. If you're using an older Mac (from 2010 or earlier), there's a chance that you can't use Recovery Mode. Your Mac will boot into the recovery partition. If you have a newer Mac with an Apple Silicon chip, shut down your machine, then start it up and keep the power button held down. For Mac models with an Intel processor, you'll need to reboot and start your Mac up while holding Command+R. Your Mac's Recovery Mode is a treasure trove of useful tools, and it's the easiest way to wipe your computer and start from scratch. Quit Disk Utility when finished formatting the disk. Choose Macintosh HD as the name, then go to Format and select APFS, then choose Erase WARNING: THIS ERASES ALL DATA ON THE MAC. If you don't have the option of using the Erase Assistant, or you have a particular version of macOS that you want to install, you'll have to do things the old-fashioned way by booting into Recovery Mode (or booting from a USB drive), erasing your drive Step One: Boot From Recovery Mode or an Installer In Disk Utility, select Macintosh HD (or the name of the disk to erase and clean install Catalina onto), then click the Erase button. Option 2: Wipe and Reinstall macOS from Scratch ![]()
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