How To Run Os9 With Leopard Installed

Discussion in 'macOS' started by lionello, Jun 25, 2009.

  1. lionello macrumors newbie

    Joined:
    Jan 19, 2009
    Location:
    P.E.I., Canada
    #1
    I'm not computer savvy.

    I have a lot of software that ran in OS9. I upgraded to Leopard, and shazam! I couldn't use it any more.

    Question: Can I run OS9 on my backup hard drive?

    How do I do it?

    Any help appreciated.
     
  2. Guiyon macrumors 6502a

    Joined:
    Mar 19, 2008
    Location:
    North Shore, MA
    #2
    Leopard no longer supports running Classic. If you are using an older G4 you can simply just boot into OS9, otherwise you have the following options:
    • Install an emulation system such as Sheepshaver to run any OS 9 software (difficult)
    • Purchase a computer (G4 or earlier) that is capable to running it
    • Downgrade to Tiger (or earlier)
     
  3. durija macrumors 6502

    Joined:
    Jan 16, 2008
    Location:
    Seattle
    #3
    This would cost a little money, but I think you could easily install OS 9 on a firewire external and run it from there. You shouldn't need a very large drive, so I'm sure you could get one pretty cheap. And it should give reasonable performance, especially if you can get a FW800.
     
  4. Tower-Union macrumors 6502

    Tower-Union

    Joined:
    May 6, 2009
    #4
    I would look into that a little more before you do. . . for example if your running Intel hardware this won't work. Even if your running G4 or earlier hardware (unlikely seeing as he just upgraded to Leopard) is OS 9 capable of booting off an external drive?
     
  5. durija macrumors 6502

    Joined:
    Jan 16, 2008
    Location:
    Seattle
    #5
    I forgot about the Intel issue. Can't run anything before OS X on Intel. But it should work fine on a PPC machine.
     
  6. Guiyon macrumors 6502a

    Joined:
    Mar 19, 2008
    Location:
    North Shore, MA
    #6
    No problems there; The Mac OS has been pretty flexible for many years.
     

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