I can not open my ''dmg'' back-up file format.

Discussion in 'iMac' started by Antonio6, Nov 13, 2011.

  1. Antonio6 macrumors newbie

    Antonio6

    Joined:
    Dec 12, 2008
    Location:
    The Netherlands
    #1
    I have a back-up file. It is a ''dmg'' file format. The size is 500 GB. I can not open it in my Mac.

    When I click on it I get the error:
    ''No Mountable File Systems" .

    Can someone help me please. I dont wanna losse my backup with all my photos, documents, etc.

    Thanks.
     
  2. techno96 macrumors member

    Joined:
    Sep 10, 2009
    #2
    Usually not fixable, Sorry.
     
  3. simsaladimbamba

    Joined:
    Nov 28, 2010
    Location:
    located
    #3
    With what Mac OS X version did you create it and with what Mac OS X version do you want to mount it?

    And have you copied the file since its creation, and if so, how (network - cable or wireless, USB or Firewire)?

    Btw, to circumvent such problems in the future, don't create single file backups, especially that big. Either use Time Machine or CarbonCopyCloner to do backups.

    Or do you want encrypted backups?
     
  4. Antonio6 thread starter macrumors newbie

    Antonio6

    Joined:
    Dec 12, 2008
    Location:
    The Netherlands
    #4


    Sorry dont understand all this info. i just wanna open the dmg file. Is located in a external hard drive. I did made the dmg with the mac software; ''Disk Utility''.
     
  5. old-wiz macrumors G3

    Joined:
    Mar 26, 2008
    Location:
    West Suburban Boston Ma
    #5
    Typically when you get the error it means the dmg was created with a version of OSx that is newer than the version you are trying to open it on.
     

Share This Page