Unable to mount external disk due to 'Unable to perform deferred repairs without full space verification' error on Mac

external disk recognition issues error: Unable to perform deferred repairs without full space verification

Can't mount external disk.



[Re-Titled by Moderator]


Posted on Mar 29, 2025 4:06 PM

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Apr 1, 2025 2:33 AM in response to PhotoHelper

To fix the "Unable to perform deferred repairs without full space verification" error, try running Disk Utility on your Mac, select the external disk, and click First Aid to repair it. If that doesn't work, you might need to use Terminal with the diskutil command to force mount or repair the disk.


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Unable to mount external disk due to 'Unable to perform deferred repairs without full space verification' error on Mac

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