How do I wipe my Mac and install a new operating system?
How do I wipe my Mac and install a new operating system?
- Connect your boot drive.
- Start up - or restart - your Mac while holding down the Option key (also known as Alt).
- Choose to install your chosen version of macOS from the external drive.
- Select Disk Utility.
- Select your Mac's start up disc, probably called Macintosh HD or Home.
- Click on Erase.
How do you erase and factory reset a Mac and reinstall macOS?
https://www.youtube.com/watch?v=FDRFZYImzPQ
Can I wipe my Mac and start over?
From the Apple menu in the corner of your screen, choose System Preferences. If you're asked to sign out of Apple ID, enter your Apple ID password and click Continue. Click Erase All Content & Settings to confirm that you want to proceed. Your Mac restarts and shows a black screen or progress bar.