Disk Utility Fails to Check and Repair APFS Volumes in macOS Monterey
By
rahimnathwani
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Summary
Disk Utility in macOS Monterey 12.0.1 has persistent problems with checking and repairing APFS volumes and containers, often failing to unmount them properly. The article documents this long-standing bug that has worsened in recent updates and provides workaround solutions while waiting for Apple to fix the issue.
Key quotes
· 5 pulledChecking and repairing disks is one of the more important tasks performed by Disk Utility, but ever since the introduction of APFS, it has been more fraught than it should have been.
One of its most persistent and pervasive problems has been complete failure because Disk Utility has been unable to unmount volumes or containers.
To my shock, in Monterey 12.0.1 this problem appears worse than ever, and I now have one disk which Disk Utility is completely unable to check or repair.
This article suggests ways around this, while we wait for Apple to fix this bug.
Don't waste time trying to discover which files are still open when you want to check or repair an APFS disk and Disk Utility throws an error.
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