bkccheung
Level 1 (0 points)

Q: Hard disk bricked after using file vault with time machine

Hi,

 

I used an external hdd for time machine with my mid-2007 iMac with file vault turned on. Last month I replaced the hdd inside my iMac and tried to recover my iMac with the time machine back up. However the migration assistant told me that there was an error in the image and I cannot restore from the back up. I was okay with that and reinstall everything from scratch. Then i decided to format my external hdd for my newly installed OS X. I used disk utility to erase the partition, but after that it failed and my external hdd is bricked. I cannot create any partition with any software (I tried both OS X and Windows software). I guess it was file vault which "protected" my hdd?

 

May I know if anyone has encountered this situation? How could I format my external hdd for future use?

 

Thank You.

Screen Shot 2012-11-16 at 6.22.13 PM.png

 

The image shows what my external hdd looks like in disk utility. The tab for erasing partition is gone...

iMac, OS X Mountain Lion (10.8.2)

Posted on Nov 16, 2012 2:23 AM

by Linc Davis,Solvedanswer
Linc Davis Linc Davis
Level 10 (207,963 points)
Applications
A:

You must back up all data to another drive before doing anything else.

 

Enter the following command in the same way as before (no typing):

 

sudo diskutil cs deleteLVG D335C131-0884-4A08-A3A3-90F2256AB6BB

 

You'll be prompted for your login password, which won't be displayed when you type it. You may get a one-time warning not to screw up. If you don’t have a login password, you’ll need to set one before you can run the command.

 

The external drive will be erased.

Posted on Nov 17, 2012 9:26 PM

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bkccheung

Q: Hard disk bricked after using file vault with time machine

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  • Helpful answers

  • by Linc Davis,Helpful

    Linc Davis Linc Davis Nov 16, 2012 11:22 AM in response to bkccheung
    Level 10 (207,963 points)
    Applications
    Nov 16, 2012 11:22 AM in response to bkccheung

    Launch the Terminal application in any of the following ways:

     

    ☞ Enter the first few letters of its name into a Spotlight search. Select it in the results (it should be at the top.)

     

    ☞ In the Finder, select Go ▹ Utilities from the menu bar, or press the key combination shift-command-U. The application is in the folder that opens.

     

    ☞ Open LaunchPad. Click Utilities, then Terminal in the icon grid.

     

    Triple-click the line below to select it, then drag or copy the text — do not type it — into the Terminal window and press return:

     

    diskutil cs list

     

    Post the lines of output that appear below what you entered — the text, please, not a screenshot.

  • by bkccheung,

    bkccheung bkccheung Nov 17, 2012 8:36 PM in response to Linc Davis
    Level 1 (0 points)
    Nov 17, 2012 8:36 PM in response to Linc Davis

    Thank you!

     

    This is the output from terminal:

     

    CoreStorage logical volume groups (2 found)

    |

    +-- Logical Volume Group 974EAA68-8BAB-41E1-B963-6D964470F903

    |   =========================================================

    |   Name:         Macintosh HD

    |   Size:         499248103424 B (499.2 GB)

    |   Free Space:   16777216 B (16.8 MB)

    |   |

    |   +-< Physical Volume D945AB35-BB7F-4EC2-9551-C78EEC641052

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

    |   |   Index:    0

    |   |   Disk:     disk0s2

    |   |   Status:   Online

    |   |   Size:     499248103424 B (499.2 GB)

    |   |

    |   +-> Logical Volume Family 2146F346-CB4F-48EF-9579-A9AF5CAE4BCC

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

    |       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 00949C4F-4CB8-4E82-80F3-8FE37AC53DD6

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

    |           Disk:               disk1

    |           Status:             Online

    |           Size (Total):       498912555008 B (498.9 GB)

    |           Size (Converted):   -none-

    |           Revertible:         Yes (unlock and decryption required)

    |           LV Name:            Macintosh HD

    |           Volume Name:        Macintosh HD

    |           Content Hint:       Apple_HFS

    |

    +-- Logical Volume Group D335C131-0884-4A08-A3A3-90F2256AB6BB

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

        Name:         Time Machine

        Size:         499763888128 B (499.8 GB)

        Free Space:   499344449536 B (499.3 GB)

        |

        +-< Physical Volume F15F1FF8-68F2-4E32-BC06-A06ADA91F407

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

            Index:    0

            Disk:     disk2s2

            Status:   Online

            Size:     499763888128 B (499.8 GB)

  • by Linc Davis,Solvedanswer

    Linc Davis Linc Davis Nov 17, 2012 9:26 PM in response to bkccheung
    Level 10 (207,963 points)
    Applications
    Nov 17, 2012 9:26 PM in response to bkccheung

    You must back up all data to another drive before doing anything else.

     

    Enter the following command in the same way as before (no typing):

     

    sudo diskutil cs deleteLVG D335C131-0884-4A08-A3A3-90F2256AB6BB

     

    You'll be prompted for your login password, which won't be displayed when you type it. You may get a one-time warning not to screw up. If you don’t have a login password, you’ll need to set one before you can run the command.

     

    The external drive will be erased.

  • by bkccheung,

    bkccheung bkccheung Nov 17, 2012 11:41 PM in response to Linc Davis
    Level 1 (0 points)
    Nov 17, 2012 11:41 PM in response to Linc Davis

    My hdd is fixed!!

     

    Thanks a lot for your help!

  • by barubin,

    barubin barubin Aug 8, 2013 7:02 AM in response to Linc Davis
    Level 1 (15 points)
    Aug 8, 2013 7:02 AM in response to Linc Davis

    Linc,

     

    I tried your technique on a locked 64GB USB thumb drive without success.

    FileVault 2 "issue" with an encrypted thumbdrive

     

    Do you have any suggestions for me besides disposing of my device?

     

    TIA.