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cannot unmount for first aid disk utility

 1 year ago
source link: https://forums.macrumors.com/threads/cannot-unmount-for-first-aid-disk-utility.2397947/
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cannot unmount for first aid disk utility

JayElDee

macrumors member

Original poster

Running Monterey 12.6.7 on iMac 5k 27" 2017
There are a few external drives that I cannot address in First aid — to run maintenance scripts for permissions.
I get this error:
Running First Aid on “Transcend 4Tb” (disk8s2)

Checking file system and repairing if necessary and if possible.
Volume could not be unmounted.
Restoring the original state found as mounted.
Unable to unmount volume for repair. : (-69673)

Sometimes I will get a message stating that First aid cannot be run because a file is using the drive I am addressing. AFAIK, there is nothing running.

Sometimes a reboot and a fresh attempt will succeed, sometimes not.
Any help appreciated and TIA

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