You can make a difference in the Apple Support Community!

When you sign up with your Apple Account, you can provide valuable feedback to other community members by upvoting helpful replies and User Tips.

Looks like no one’s replied in a while. To start the conversation again, simply ask a new question.

freshleaf5985 Author

Level 2

304 points

Formatting a disk

How do you upgrade your Mac by formatting its startup disk?

iMac Line (2012 and Later)

Posted on Dec 29, 2019 3:17 AM

Top-ranking reply

dialabrain

Level 10

124,721 points

Posted on Dec 29, 2019 3:44 AM

Normally you don't format a disk just to upgrade. If you want to do a clean install that's different. You could create a USB Bootable Installer to boot ffrom and install to your newly formatted drive…

How to create a bootable installer for macOS - Apple Support

Or you could install using Internet Recovery.

Make sure you have a Time Machine or other backup before you do anything.

View in context

Formatting a disk

Similar questions