Installation
Make sure to have an up-to-date backup
Make a bootable MacOS install USB drive
Erase hard drive
Plug in MacOS install drive, click on the Apple menu, and then restart. When your display goes blank, press and hold the option key until a screen appears with all your drives listed. Pick your new Install macOS drive and hit return to begin booting from your external drive.
When it boots up, open Disk Utility.
Click on your internal drive and then click on “erase”
Set the name you’d like. Select APFS format. Do NOT select encrypted formats here.
Close Disk Utility
Reinstall MacOS Click on “Install MacOS ...” and go through the process. After the install, on the fresh initial boot, go through all the settings.
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