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Leopard on iMac G3?

Is it possible to install Leopard on an iMac G3? I know Apple dropped support for the G3 processor but is there a way?

Toshiba Satellite A105 S2231, Windows XP, Macs: 1 iMac G3, 3 Performa's, 1 Powerbook's

Posted on Feb 22, 2008 3:07 PM

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16 replies

Feb 23, 2008 7:48 AM in response to Apple Rules

Apple Rules,

"Is it possible to install Leopard on an iMac G3?"

The Leopard System Requirements, clearly state;

"Mac computer with an Intel, PowerPC G5, or PowerPC G4 (867MHz or faster) processor
512MB of memory
DVD drive for installation
9GB of available disk space
Some features require a compatible Internet service provider; fees may apply.
Some features require Apple's .Mac service; fees apply."


Note that Power PC G3 is not listed, and there was never an iMac G3, with 867MHz or faster processor manufactured.

So I suspect that the answer is no.

ali b

Feb 25, 2008 12:49 PM in response to Apple Rules

Apple Rules, no there is no supported way. If you attempted it you would be faced with the following issues:

1. Updates may not work.
2. Kernel panics could happen.
3. Graphic User Interface elements would run slowly if at all.
4. Third party software, and drivers, may not work at all.
5. Insufficient disc space or RAM to do simple multitasking.

In essence, you are proposing to put a jet engine on a horse drawn chariot. You are proposing to make a jalopi out of a machine.

Is it really your intention to exceed the capabilities of the machine and make it work haphazardly if at all? We get enough complaints from people whose specs suggest it should work on their machine. Imagine the complaints trying to run it on a machine that isn't supported. If you do it, take full responsibility for whatever failures happen.

Feb 25, 2008 6:14 PM in response to Apple Rules

Make no mistake, XPostfacto was not made by Apple. And even though it allowed booting of older operating systems, it still didn't mean those Macs were necessarily usable. You were still pretty much on your own when using such a system, and couldn't except continuous updates.

It was more of a borrowed time.

And don't forget Leopard will run on an 867 Mhz G4. Those Macs were made 6 years ago!
That's a pretty good length of time for a Mac that basically lost its AppleCare in half as much time.
To expect something that lost its AppleCare in three times as much time sounds a bit excessive.

There are always used and refurbished Mac operating system discs too.

So it isn't like you can't get Tiger or earlier, or Macs that run those systems.

Leopard on iMac G3?

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