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  1. #1

    Member Since
    Dec 23, 2006
    Problems Installing Snow Leopard over Leopard
    Hi there,

    I have a new 27 inch iMac that came with Snow Leopard.
    In order to run Pro Tools Software I decided to install Leopard over Snow Leopard so the software would work.

    Now that I am able to upgrade to Snow Leopard I'm having a problem.

    The problem is:

    I insert the Snow Leopard Install disc and follow instructions.
    The installation begins, saying it will take 59 mins.
    At about 47 mins left, the computer automatically restarts and installation ceases.

    I then went to erase the HD in Disc Utility and all the options are grayed out so I am unable to do that.

    Since installing Leopard over Snow Leopard I have been told that the new iMac I have is not designed to run Leopard.

    Now I'm stuck...

    Does anyone know what I can try?

    Any help is greatly appreciated.


  2. #2

    Lifeisabeach's Avatar
    Member Since
    Sep 30, 2007
    The Republic of Neptune
    EDIT: Nevermind my initial reply. I thought you were trying to get Leopard on, not going from Leopard back to Snow Leopard. Doh! Starting over.....

    So... are you unable to erase your drive from the Snow Leopard DVD? Have you tried simply doing so from your Leopard install DVD?

    Please verify and include the exact model/year of your Mac and OS X version number (available from "About This Mac", then "More Info" on the Apple menu).
    Links: Onyx | EasyFind | Apple Hardware Test | How to test your hard drive | The Safe Mac Adware Removal Guide | Uninstall MacKeeper
    Lifeisabeach - Mac-Forums Member of the Month June 2009, Feb 2012, and March 2013.

  3. #3

    Member Since
    Dec 27, 2009
    If I am reading this correctly we have the exact same problem. I too am installing snow leopard to run pro tools. The only thing is I am doing it over tiger. My installation has gotten down to 39 minutes remaining before stopping. I am not sure the solution but if you find one please let me know!

  4. #4

    Member Since
    Apr 13, 2010
    Huh? You mean Leopard over Snow Leopard.
    I think you are confused. You can't install a backward degrade -- Leopard over Snow Leopard. You install Snow Leopard over Leopard -- going forward. To install Leopard on a drive volume that has Snow Leopard requires clicking the "Options" button. Then you choose either "Erase and Install" (in which case, Snow Leopard disappears entirely) or "Archive and Install" (in which case Snow Leopard is hidden in a folder called "Previous Systems"). There isn't going to be any installation of Leopard over Snow Leopard.

    In reference to the off-topic response about Tiger, you can't install Snow Leopard over Tiger. All claims to that effect are false. Tiger must be gotten out of the way first, either by erasing the volume, by moving all the Tiger folders into some other folder (similar to an Archive and Install), or by choosing a different drive volume.

  5. #5

    Member Since
    Sep 09, 2009
    Down Under :D
    Back to my old 2.2GHz C2D MB after selling my MBP and wondering what my next Mac will be :)
    This thread has me lost....
    So, to the OP, can you please start again.
    You have a new Mac that shipped with Snow Leopard, and you are trying to install Leopard! Is that correct?

  6. #6

    pigoo3's Avatar
    Member Since
    May 20, 2008
    2011 13" MBP 2.3ghz, 8gig ram, OS 10.7.5
    You guys are replying to a 7 month-old thread...I don't think the OP has been checking in much lately!

    - Nick
    - Too many "beachballs", read this: Beachballs
    - Computer seems slower than it used to? Read this for some slow computer tips: Speedup
    - Almost full hard drive? Some solutions. Out of Space
    - Apple Battery Info. Battery

  7. #7

    Member Since
    Sep 09, 2009
    Down Under :D
    Back to my old 2.2GHz C2D MB after selling my MBP and wondering what my next Mac will be :)
    Pmsl ;p

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