- #Clean install mac os x high sierra mac os#
- #Clean install mac os x high sierra pro#
- #Clean install mac os x high sierra password#
The thumbnail uses the typical wallpaper of a macOS version. It indicates what version of macOS will be installed on your Mac. Reinstall macOSĪfter you have started up to macOS Utilities screen, you will see a round thumbnail next to Reinstall macOS option. When done, quit Disk Utility to return to the macOS utilities window. Wait patiently and do not terminate it halfway. It will take a few minutes to half an hour to complete the disk formatting. Confirm the wiping by clicking the Erase button. It is very essential when you need to reinstall macOS Big Sur on an M1 Mac. Deleting all the volumes can free up space and eliminate possible conflicts for a clean macOS reinstallation. This will delete Macintosh HD - Data volume the system created when you upgraded to macOS 10.15 or later and all other volumes you created as a user.
#Clean install mac os x high sierra mac os#
Select Mac OS Extended (Journaled) as Format for macOS 10.12 or earlier, while select APFS for macOS Monterey, macOS Big Sur, macOS Catalina, macOS Mojave, or macOS High Sierra. It is highly recommended to use "Macintosh HD" for convenience's sake. Give a name to the volume you are going to format. On the sidebar of Disk Utility, select the system volume which contains the operating system and click Erase. Select the Disk Utility option and click Continue. It is worth mentioning here again - make sure you have transferred your important files to a computer or external storage device. However, if you want a truly clean OS reinstallation and a smooth process without interruptions by potential startup disk corruptions or space shortage, formatting the Mac startup disk is necessary. If you want to reinstall a clean copy of operating system, but leave your user account and files you created intact and stay where they are, you can skip this step. Then you can proceed to format your startup drive and choose reinstall Mac operating system from macOS Recovery Mode.
#Clean install mac os x high sierra password#
Click Options and then click Continue to boot in macOS Recovery.ĭuring the bootup to Recovery Mode, an admin password might be required to authenticate your identity for an OS reinstallation.Īfter you enter the functioning recovery partition, you will see the macOS Utilities windows.
#Clean install mac os x high sierra pro#
On an M1/M1 Max/M1 Pro Mac: Shut down your Mac completely, press the Touch ID button to turn it on and then immediately press down the Touch ID button until you see "Loading startup options". Release the keys until you see an Apple logo and your Mac will boot into the macOS Utilities window in recovery partition. On an Intel Mac: Shut down your Mac completely and turn it on while holding down Command + R keys simultaneously. In the first place, you should identify your Mac model, an Intel-based Mac, or an Apple silicon Mac, as the ways vary to enter Recovery mode on different Mac models. Even though you don't intend to wipe your MacBook, securing your files is a good idea before OS reinstallation since it is a major procedure. Note: Before you start, make sure you have backed up any files you want to keep to an external drive.
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