quartz extreme was supported, now is not!

perrybmg · #1 July 6th, 2009, 09:53 AM

Hi guys, A few months back I bought a new Geforce 4 ti 4600 card for my G4 PowerMac MDD Firewire 800 (dual 1.25). It did super,and of course supported Quartz Extreme. Well, one of the processors went bad in the G4, so I got another MDD Powermac exactly like it: dual 1.25 G4.
OK, so I swap over my Geforce card, and.... it says Quartz Extreme is not supported! Whatever!? What am I missing here? I've re-seated the card more than once and restarted the computer...
thanks

nixgeek · #2 July 6th, 2009, 11:28 AM

Were they both running the same version of OS X?

perrybmg · #3 July 6th, 2009, 12:21 PM

Were they both running the same version of OS X?

yes, both were running 10.4.11

DeltaMac · #4 July 6th, 2009, 01:03 PM

Are the two PowerMacs really identical? You mentioned FW800 at first, so both would have FW800 ports? The reason that I ask, is that there were 3 separate models of the MDD PowerMac with dual 1.25 processors, and only one has FW800 ports.
I don't think there's any difference with the AGP slots, but could be a factor, I suppose.

perrybmg · #5 July 6th, 2009, 07:03 PM

OK, problem resolved! They are identical PowerMacs.
Here's what I did. When I got this computer recently, I simply put my drive bay/u bracket from the dead PowerMac into the one I received. I left the jumper on one of these to keep it as the master, and removed the jumpers on the two that were already in the bay in the back of this computer. I'm guessing now that this is a no-no! Everything else was working properly, though...? Anyhow, what I just did now was to put my master in the back bay where "it's supposed to be" and put one storage drive beside it and one storage drive in the front. Make sense?
Well, I'm OK now. Thanks for your help, guys.

Was I supposed to know that, or was it supposed to work that way as well? In other words, does your master always have to be in the back of the computer for everything to work correctly?

DeltaMac · #6 July 6th, 2009, 07:12 PM

If you simply transferred the entire drive rack to the replacement PowerMac, then you didn't need to change the jumpers at all. Your PowerMac has three independent drive buses. Each has a maximum of 2 devices , and all would use cable select only.

perrybmg · #7 July 6th, 2009, 07:19 PM

I originally transferred the drive rack from my dead G4 to the front of the newer G4, and then pulled the jumpers on the master drive(of the newer G4) in the back.

So you're saying that all three buses are essentially the same? The motherboard reads them with no certain respect? What I did should have worked?

DeltaMac · #8 July 6th, 2009, 08:07 PM

each drive bus (with a possible 2 drives) are independent. The drives (and the associated jumpers) are set for each pair, and don't affect any other pair. The exception to that would be if the jumpers are set wrong, and won't boot because of that setting, That would definitely cause you booting problems.
Anyway. If you transferred the rack from one PowerMac to another, the jumpers on that rack would not affect the OTHER rack in any way.
For a little extra info, the vertical rack attaches to a 100 Mhz bus. The rack along the bottom front attaches to a 66 MHz bus, so the vertical drives will have the capability for faster access. The CD drives use a 33 MHz bus.

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