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Do dual cpu'd Macs use the same install cds ?

It all depends on which dual CPU one you're talking about, and what OS.

A standard version of OS X works fine on all dual-CPU G4s. (Obviously, later machines that came out when 10.2 was current require 10.2, and won't work with 10.1, though.)

If you're talking about one of your sig-mentioned systems upgraded to dual CPU, then any supported OS will work just fine.

If you're talking about a later dedicated dual-CPU rig, then it depends on which one. From my understanding, the Mirror Drive Door models can *ONLY* run OS 9 from their own custom install disc, they can NOT use a bog-standard 9.2 install disc. For a Gig-E, Digital Audio, or either Quicksilver, a standard 9.2.1 install disc should work fine. Although this is true not just for the dual CPU models, but for the single-CPU models of the same family.

 
It is a G4 MDD 1ghz Dual cpu with no install cds/dvds. Maybe I should pass.Do linux distributions support this model?
Just to reiterate: OS X versions newer than what came with that model will work just fine.

The dual 1 GHz MDD came with 10.2 installed, so if you have a retail 10.3, 10.4, or 10.5, it will install with no problems whatsoever. You would only run in to issues trying to use a retail 10.2, or 9.2.

This being 68kmla, I was kind of assuming you were talking about putting the oldest possible OS on. If you want it for real current use, it will work great with 10.5. (I have a G4 Digital Audio with a dual 1 GHz upgrade, and it rocks. Faster than my 1.25 GHz eMac for almost everything, in spite of the slower bus, slower RAM, and slower single-core speed. (They have nearly identical hard drives.)

 
That's still pretty decent, and while it's at the low end of the requirements for Leopard, I think you'll find that Leopard will run m ore nicely on that than it would a single-867 G4. (Although I'd personally go with 10.3 or 10.4 on it, if performance is a big concern, and you don't think you'll need any Leopard-only functionality.)

 
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