Trying to upgrade OSX 10.3.9 to 10.4 in an iMac

ytriem

Registered
I have an iMac 17" 1GHz PowerPC G4 768 MB DDR DRAM, presently running OSX 10.3.9. I've backed it up pretty well and tried to upgrade to Tiger with a couple of CD's purchased on eBay cheap from someone who didn't guarantee they would work. They don't. My computer doesn't even see the disk. How specific does the upgrade have to be? What do I do now?

Thanks--

Yvonne
 
It has to be a retail disc set. Mac OS X 10.4 retail disc set has black discs.
The gray ones will not work - those are model specific, and will only work with the model of Mac they were shipped with. Are those discs black or gray?
 
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