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Unable to backup iMac using TimeMachine

I get the following error which prohibits my iMac from backing up using TimeMachine:


iMac 21.5″ 4K, macOS 12.4

Posted on Jun 22, 2022 12:09 PM

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Question marked as Apple recommended

Access Disk Utilities and erase the drive; format it APFS.


If this is your active backup drive, 1.) it's not functioning and 2.) the short time period you'll be without a backup is minimum risk for a properly performing Mac.


If this fails. Try First Aid then erase and format.


If that fails, you may be experiencing a failed drive.

Posted on Jun 22, 2022 12:58 PM

1 reply
Question marked as Apple recommended

Jun 22, 2022 12:58 PM in response to James from New Haven

Access Disk Utilities and erase the drive; format it APFS.


If this is your active backup drive, 1.) it's not functioning and 2.) the short time period you'll be without a backup is minimum risk for a properly performing Mac.


If this fails. Try First Aid then erase and format.


If that fails, you may be experiencing a failed drive.

Unable to backup iMac using TimeMachine

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