1 Reply Latest reply: Sep 24, 2012 4:56 PM by macjack
Alan Lees Level 1 Level 1 (0 points)

Just a quick one - bit confused how to procede - I installed Lion successfully on a new external HD - I now want to upgrade that volume to Mountain Lion and am not sure where I should be to download and upgrade - my imac is running SL with a bootcamp - I have Leopard on an external with PPC apps- I have lion on another external which is running fine

 

Do I boot to Lion to perform the upgrade or Snow Leopard? or doesn't it matter?


iMac, Mac OS X (10.6.8), Mid 2010 27" 3.2 Ghz Intel Core i3
  • macjack Level 9 Level 9 (50,625 points)

    Alan Lees wrote:

     

    I installed Lion successfully on a new external HD - I now want to upgrade that volume to Mountain Lion

    Boot from that volume. Go to AppStore purchase ML and DL it. When it finishishes DLing it will open an install window. Before you install, quit out of the installer. Go to Applications and copy "Install OS X Mountain Lion.app" off to some other media. This is because it self-destructs after install, so if you ever need it again you don't have to go through the DL again.

     

    Then double-click the  "Install OS X Mountain Lion.app" in your Applications folder and you're off and running.