How To Run Os9 With Leopard Installed

[lionello]

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.

 

[Guiyon]

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)

 

[durija]

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.

 

[Tower-Union]

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?

 

[durija]

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?

I forgot about the Intel issue. Can't run anything before OS X on Intel. But it should work fine on a PPC machine.

 

[Guiyon]

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?

No problems there; The Mac OS has been pretty flexible for many years.