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You are here: MacNN Forums > Enthusiast Zone > Classic Macs and Mac OS > Installing OS 9

Installing OS 9
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Forum Regular
Join Date: Aug 2000
Location: Cali
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Sep 6, 2000, 03:59 PM
Does anyone know if you can use the Software Install disc that comes with the G4's to install OS 9 on an older G3 or any older systems?
Forum Regular
Join Date: Aug 2000
Location: big round blue place
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Sep 9, 2000, 09:49 PM
No you can not. The boot rom is totally different and the older machines will not work with the new rom files
You can have me mac when u pry me cold, dead fingas off da mothabowd :eek:
mac freak
Mac Elite
Join Date: Jun 2000
Location: Highland Park, IL / Santa Monica, CA
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Sep 10, 2000, 12:07 AM
Not necessarily... I used my slot-loading iMac's "Software Restore" CD to install OS 9 onto my beige G3/300.

There's only one way to truly know... try it!!!
Be happy.
Dedicated MacNNer
Join Date: Mar 2000
Location: Colorado Springs, Colorado, USA
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Sep 10, 2000, 05:29 PM
I tried taking my G4 OS 9 and tried to install it on my G3 and it was severely messed up. Couldn't connect to the Internet because it couldn't find the internal modem, among many other problems.

Then I just tried to reinstall 8.5 and then 8.6, but they refuse to overwrite some files, and you'll have to do a fresh intall zeroing out your HD.

I then went to purchase OS 9.0.4 CD (which I planned to do anyway) and that works great.

Plus it's illegal to put the OS software on 2 machines that way.

Pax Christi,
In Christ,
Deacon Nikolai
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