cannot unlock encrypted APFS Volume

Hi,


I used an external USB drive for Time Machine backups. All of a sudden it does not mount any more.


Unlock fails:


sudo diskutil ap unlockvolume disk3s2 -nomount

Password:

Passphrase:

Unlocking any cryptographic user on APFS Volume disk3s2


Passphrase incorrect or user does not exist


I have not set any Passphrase when setting up the volume. Here I gave the sudo pwd.


Also, another unencrypted volume on same drive does not mount any more:


diskutil ap List:


+-- Container disk3 14CDE3BC-22FC-4D13-AC2C-0F1E58B5B532


    ====================================================


    APFS Container Reference:     disk3


    Size (Capacity Ceiling):      2990226894848 B (3.0 TB)


    Capacity In Use By Volumes:   540555259904 B (540.6 GB) (18.1% used)


    Capacity Not Allocated:       2449671634944 B (2.4 TB) (81.9% free)


    |


    +-< Physical Store disk2s2 2866E9CF-BBD0-412B-BE58-8CE4C55D21BE


    |   -----------------------------------------------------------


    |   APFS Physical Store Disk:   disk2s2


    |   Size:                       2990226894848 B (3.0 TB)


    |


    +-> Volume disk3s1 1455E28D-5B1A-43AF-82B9-BE4826FDBF4A


    |   ---------------------------------------------------


    |   APFS Volume Disk (Role):   disk3s1 (No specific role)


    |   Name:                      My Passport Volume (Case-sensitive)


    |   Mount Point:               Not Mounted


    |   Capacity Consumed:         90508578816 B (90.5 GB)


    |   Sealed:                    No


    |   FileVault:                 No


    |


    +-> Volume disk3s2 79F60454-C701-4FE7-A14C-0CA6A672A3D7


        ---------------------------------------------------


        APFS Volume Disk (Role):   disk3s2 (Backup)


        Name:                      My Passport for Mac (Case-sensitive)


        Mount Point:               Not Mounted


        Capacity Consumed:         449654915072 B (449.7 GB)


        Capacity Reserve:          None


        Capacity Quota:            1005000003584 B (1.0 TB) (44.7% reached)


        Sealed:                    No


        FileVault:                 Yes (Locked)

Mac mini

Posted on Dec 10, 2024 7:05 AM

Reply
Question marked as Top-ranking reply

Posted on Dec 10, 2024 9:18 AM

Since you are having issues with two volumes, try running Disk Utility First Aid on the hidden Container. Within Disk Utility you may need to click "View" and select "Show All Devices" before the hidden Container appears on the left pane of Disk Utility. Even if the First Aid summary says everything is "Ok", click "Show Details" and scroll through the report to see if any unfixed errors are listed. If errors are listed, then run First Aid again until the errors are gone. If the errors remain after several attempts, then you will need to erase the whole drive.



2 replies
Question marked as Top-ranking reply

Dec 10, 2024 9:18 AM in response to Timonen

Since you are having issues with two volumes, try running Disk Utility First Aid on the hidden Container. Within Disk Utility you may need to click "View" and select "Show All Devices" before the hidden Container appears on the left pane of Disk Utility. Even if the First Aid summary says everything is "Ok", click "Show Details" and scroll through the report to see if any unfixed errors are listed. If errors are listed, then run First Aid again until the errors are gone. If the errors remain after several attempts, then you will need to erase the whole drive.



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cannot unlock encrypted APFS Volume

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