Encrypting an existing Time Machine backup?

Discussion in 'OS X Mountain Lion (10.8)' started by mklnz, Nov 20, 2012.

  1. mklnz macrumors regular

    Joined:
    Sep 6, 2007
    Location:
    Auckland, New Zealand
    #1
    I'm trying to encrypt an existing unencrypted TM backup, is this possible?
    I read on a few sites that you can reselect the backup disk and tick the encrypt backup option, but when I do I get the following - it looks like I have to start fresh?
     

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  2. prisstratton macrumors 6502

    prisstratton

    Joined:
    Dec 20, 2011
    Location:
    Winnipeg
    #2
    This site says that this is possible, although there are caveats (GUUID partition table):

    http://pondini.org/TM/31.html

    Also, here:

    http://osxdaily.com/2012/09/26/encrypt-time-machine-backups-mac-os-x/

    The following thread is interesting, the OP is not describing the exact same set of circumstances as you, but there are some replies that suggest that the TimeMachine drive has to be identified as being "CoreStorage" for it to be encrypted. The OP has not responded whether this worked or not. Maybe keep an eye on this thread as it looks like it is still developing.

    https://discussions.apple.com/message/20329196#20329196

    Hope it helps………..
     
  3. mklnz thread starter macrumors regular

    Joined:
    Sep 6, 2007
    Location:
    Auckland, New Zealand
    #3
    Unfortunately I couldn't get it working, so I had to start fresh. I'll keep my old backup set on a separate encrypted drive for awhile and delete it after a few months.
     

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