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.

Azam0 Author

Level 1

4 points

Clean install

How do I do a clean install? I’d like to reset my MacBook Pro as new.

MacBook Pro 13″, macOS 10.12

Posted on May 17, 2021 10:14 AM

Top-ranking reply

a brody

Level 10

84,005 points

Posted on May 17, 2021 11:07 AM

If reselling, be sure to deauthorize your iTunes first.

Backup your computer's data.

Then if the Mac is July 2011 or later, and you want the original OS, command-option-shift-R boot the Mac while connected to the internet via hardware or a secure WiFi. Use Disk Utility to reformat the Mac HFS Extended GUID.

Then run the installer.

If you want the OS that is currently running, use command-R boot, and use Disk utility to format the top most partition after showing View all in Disk Utility.

Once reformatted, then Quit Disk Utility, and run the installer.

There is no "Clean install" option per se. Apple removed that prior to the Intel Macs.

View in context

Clean install

Similar questions