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macOS Monterey Install issue 

Problème d’installation de macOS Monterey

Some Mac users have had trouble installing macOS Monterey. They receive the message “You Must Provide Authorization for this Volume by Setting it as your Startup Disk.” Some users have tried to then follow the instructions for setting up their startup disk, however, this hasn’t worked for everyone. In this article will tell you what has worked for most users with the macOS Monterey Install issue.

Solution for Most Users

Most of the users encountering the macOS Monterey Install issue have had success by installing using an admin account:

  1. If you are currently logged in using a basic user account, no admin privileges, then you should log out of that user. If you are unsure if you are using an admin account:
    1. Go to System Preferences and click on Users & Groups.
    2. Check on the left side of the window. Under each user name, you should see either Standard or Admin. Log in using one of the admin accounts.
  2. After you log in using an admin account, proceed with the macOS Monterey install. You can go to Apple menu > System Preferences and click on Software Update to install.

Change your Startup Disk

If the above solution doesn’t work for you, maybe you actually need to do as said in the error message; Authorize your startup disk. 

Do the following : 

  1. Go to Apple menu > System Preferences and click on Startup Disk.
  2. Click on the lock icon to make changes and enter an admin password (or unlock with Apple Watch).
  3. Click on the disk you want to use as your startup disk. Then click on Restart.

Troubleshooting Issues after the Upgrade

Many times after upgrading to a new macOS, users will experience some of the same types of issues; The same issues were seen when upgrading to Big Sur, and Catalina as well. So, the same issues may occur for users upgrading to Monterey.