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You are here: MacNN Forums > Enthusiast Zone > Classic Macs and Mac OS > clean installing OS 9.1

clean installing OS 9.1
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Junior Member
Join Date: Aug 2000
Location: Springfield, U.S.A.
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Feb 16, 2001, 04:56 PM
I installed 9.1, but now my iMac 500 DVSE (256 RAM) is running slow. Someone mentioned to clean install 9.1 (which might be the culprit since the 1st time I installed it, it gave me problems. How do I do a clean install? Can I revert to 9,0 w/o having to lose all data?
G5 Dual 2.0
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Senior User
Join Date: Mar 2000
Location: A mile high, Denver, Colorado, USA
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Feb 16, 2001, 05:04 PM
You need to get the 9.1 cd. It's only around $25, I think, if you have the coupons that came with the 9.0 cd.
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Join Date: Nov 2000
Location: Boston, MA
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Feb 18, 2001, 09:26 PM
I really don't see it as a problem to back up your data and then do a reformat and install OS 9.0 then afterwards upgrade to 9.1. That is what I did and it really helped out a great deal. Of course other problems will crop up, but I have found with every major upgrade it tends to pay off in the end. As for reverting back, I am sure you would have to reinstall fresh as when you install back to 9.0, it won't over write what is more current. I am not really going there as I am not 100% and I would not tinker too much. I just like the reassurance that I either do it all or do not do it at all.
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