Difference between Install DVD & Upgrade DVD

Discussion in 'macOS' started by montycat, Sep 26, 2009.

  1. montycat macrumors 6502

    montycat

    Joined:
    Mar 19, 2007
    Location:
    Florida
    #1
    I have both of these DVDs that Apple sent me after a received a defective Upgrade DVD. What is the difference between them? Thanks MC
     
  2. appledyl macrumors regular

    appledyl

    Joined:
    Apr 20, 2009
    Location:
    USA
    #2
    I'm guessing (though i'm not completely sure) that the Install DVD can install OS X to a mac despite the current operating system installed. An Upgrade CD requires the version you were upgrading from to install. (e.g. Upgrade from Tiger to Leopard = Upgrade CD. Upgrade from Mac OS 9 to Leopard = Install DVD)

    Please correct me if I'm wrong.
     

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