Filevault 2: "There was an error preparing the Time Machine backup disk.."

Discussion in 'Mac OS X Lion (10.7)' started by Rizvi1, May 30, 2012.

  1. macrumors 6502a

    Joined:
    Mar 29, 2006
    Location:
    Laurel, MD (Baltimore, MD / Washington, DC area)
    #1
    I posted this over at discussions.apple.com, I thought I would post it here too.

    I have a MacBook Pro that has FileVault 2 turned on. I wanted to back up my data to an external hard drive.

    I Have a 320gb older Western Digital Hard Drive. I connected to it via USB (will try Firewire next - but need to find my Firewire 400 to 800 cable). Right now I have Mac OS X Lion 10.7.4 and I believe that on 5/23/2012 when I Tried this last I had that same version. If not, it should have been 10.7.3.

    First Tried to encrypt within Time Machine by selecting "Encrypt Backup Disk"

    [​IMG]

    Got the error that says "There was an error preparing the Time Machine backup disk... Invalid Request"

    [​IMG]

    Then went into Disk Utility next and tried to encrypt from there:
    (Selected "Mac OS Extended (Journaled, Encrypted"):

    [​IMG]

    Got a "Disk Erase failed with the error: Unable to create a new Core Storage logical volume group."

    I did the verify disk and repair disk, and tried again, still no luck.
     

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