Downgrade 2011 iMac per loaded with mountain lion back to lion or snow leopard?

Discussion in 'OS X Mountain Lion (10.8)' started by aPple nErd, Feb 21, 2013.

  1. macrumors 68020

    aPple nErd

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  2. Moderator emeritus

    robbieduncan

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    #2
    Find it here (two specs of 2011 iMacs exist). Oldest version you can install is pre-installed Mac OSX.
     
  3. thread starter macrumors 68020

    aPple nErd

    Joined:
    Feb 12, 2012
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    #3
    So basically, the ones preloaded with lion, I can downgrade to sl, but the Mtn lion ones can only be on mountain lion?
     
  4. Moderator emeritus

    robbieduncan

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    #4
    That sounds likely: if a machine has only ever shipped with ML then any previous OS won't have platform drivers for that machine and won't be able to boot.
     

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