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  1. #1

    Member Since
    Dec 03, 2007
    Question Can 32-bit OS run on 64-bit system?
    Has anyone successfully partitioned 10.5 or 10.6 OS on to a 64-bit machine made for 10.7 and up? If so, how's the reliability?

    Thanks in advance.

  2. #2

    harryb2448's Avatar
    Member Since
    Nov 28, 2007
    Nambucca Heads Australia
    iMac i5 2.7GHz, 16GB memory, OS 10.11.1.
    If the computer came with Lion or Mountain Lion doubtful Leopard or Snow Leopard will run on it. As a rule of thumbs there is no going back to an OS released prior to the manufacture of the computer.
    Hang on to those original install discs like grim death! Using OS X.7 or later make a bootable USB thumb drive before running Installer!

  3. #3

    bobtomay's Avatar
    Member Since
    Dec 22, 2006
    Texas, where else?
    15" MBP '06 2.33 C2D 4GB 10.7; 13" MBA '14 1.8 i7 8GB 10.11; 21" iMac '13 2.9 i5 8GB 10.11; 6S
    There are no drivers for the newer systems on the older versions. Typically they will refuse to even install.
    I cannot be held responsible for the things that come out of my mouth.
    In the Windows world, most everything folks don't understand is called a virus.

  4. #4

    louishen's Avatar
    Member Since
    Oct 22, 2007
    Mac Mini Core i7 2012 | White 2009 MacBook 2 Ghz | 733 Mhz G4 Quicksilver
    Why do you want to run an older 32 bit kernal OS
    Member of the Month September 2008 & August 2012 | Found advice useful? use the rep system

  5. #5

    Member Since
    Dec 03, 2007
    @louishen...I was considering workarounds to first move my loaded Powerbook to an Intel Mac through Rosetta (not supported after OS 10.6.8), and partitioning that onto a 64-bit system. Too iffy though, or plain impossible.

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