Change Password on Encrypted Disk: Invalid Request?

Discussion in 'OS X Mountain Lion (10.8)' started by simplebeep, Jan 21, 2013.

  1. simplebeep macrumors member


    Sep 28, 2007
    Hi all.

    I have an internal hard disk, auxiliary to my startup disk, which is CoreStorage encrypted, originally via diskutil cs. I am trying to change the password to one that is more secure—I dutifully read the manpage and came up with the following command:

    cat passwordChg.txt | diskutil cs passwd 52DC2A4E-A74A-409A-B8B4-B440AC4F8686 -stdinpassphrase
    where passwordChg.txt contains the old and new passwords separated by newline. Instead of doing anything, diskutil replies:

    Started CoreStorage operation
    Error: -69886: Invalid request
    Huh? I tried several variations (sudo, synonyms for keywords, specifying the passwords on the command line, etc.) which all give precisely the same error. Disk offers to change the password, and makes no complaint, but in fact changes nothing.

    I have also tried the command with each one of the UUIDs in the coreStorage listing—each of which I'm told "is not a CoreStorage Logical Volume UUID." They are:

    +-- Logical Volume Group 059FCC6B-DA8D-4590-9D67-4C4CE28FCF02
        Name:         Tood
        Size:         437704826880 B (437.7 GB)
        Free Space:   0 B (0 B)
        +-< Physical Volume 501C67EC-BCB2-4EC6-BAFA-21F72905B5AB
        |   ----------------------------------------------------
        |   Index:    0
        |   Disk:     disk1s2
        |   Status:   Online
        |   Size:     437704826880 B (437.7 GB)
        +-> Logical Volume Family 7B1C6A95-ED55-476F-B946-D0CC5B63A0FD
            Encryption Status:       Unlocked
            Encryption Type:         AES-XTS
            Conversion Status:       Complete
            Conversion Direction:    -none-
            Has Encrypted Extents:   Yes
            Fully Secure:            Yes
            Passphrase Required:     Yes
            +-> Logical Volume 52DC2A4E-A74A-409A-B8B4-B440AC4F8686
                Disk:               disk4
                Status:             Online
                Size (Total):       437386055680 B (437.4 GB)
                Size (Converted):   -none-
                Revertible:         Yes (unlock and decryption required)
                LV Name:            Bukkit
                Volume Name:        Bukkit
                Content Hint:       Apple_HFS
    Any ideas or suggestions are greatly appreciated.

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