Reinstall Macos Catalina
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Reinstall Macos Catalina No Disk
Reinstalling macOS Catalina from recovery mode shouldn't affect any of your saved files; it simply replaces the OS with a brand new copy. Click the Apple logo and select Restart. As soon as the computer starts to shut down, hold down Command + R. Continue holding these keys past the black screen and/or music you hear when the. To perform a clean re-install in Catalina, once in Recovery Mode, you need to delete your Data volume, that’s the one named Macintosh HD - Data, or something similar if you’re using a custom name, and to erase your System volume.
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