External Drive Encryption and El Capitan not accepting unlock password

Discussion in 'OS X El Capitan (10.11)' started by apb87, Jul 12, 2015.

  1. apb87 macrumors member

    Joined:
    Apr 26, 2010
    #1
    In case anyone else runs into this issue and wants to avoid a headache:

    I backed up all of my files and a VM to an external drive and was in the process of encrypting it when I installed El Capitan. Once El Capitan installed, the external drive would not accept my unlock password. I wasn't sure if I forgot the password or not.

    I was finally able to get into my drive by installing a Yosemite VM and transferring the files from the VM to my host El Capitan machine. (I don't have a second Mac, but it would likely be quicker to unlock the drive via a separate non-El Capitan mac.) I will leave it connected to the VM to allow the encryption process to complete and see if it will then appear under El Capitan..

    TL;DR. External drive wouldn't mount/wouldn't accept unlock password. Current El Capitan beta has known issues with disk utility and usb devices, so I was able to circumvent the issue by connecting the drive to a Yosemite VM (or another Mac with Yosemite or earlier).
     
  2. Shirasaki macrumors 603

    Shirasaki

    Joined:
    May 16, 2015
    #2
    I create a backup volume under el capitan and it is encrypted. Currently I have no issue.

    I know this would not help, though.
     
  3. apb87 thread starter macrumors member

    Joined:
    Apr 26, 2010
    #3
    Was yours already completely encrypted? I have a 3TB drive and it was only around 15% encrypted when I upgraded my machine to El Capitan, so that might be why yours had no issue since it wasn't still in the conversion process.
     
  4. Shirasaki macrumors 603

    Shirasaki

    Joined:
    May 16, 2015
    #4
    Mine is encrypted completely under el capitan, which should be the issue for you. You should wait until it completes encryption before installing el capitan.

    By the way, I only encrypt a quarter of my whole volume.
     

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