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A possible fix for a highly unstable G3 or G4 Tower
I believe this to be complete and utter nonsense. A bus controller could fail to operate properly due to defects or improper environmental conditions (e.g. heat, humidity, etc), but I seriously doubt that it could have "worn out". Integrated circuits are generally very robust. I have experience with many many servers and raid units that have withstood ten or more years of near constant use without failure of a bus controller. Hard disks and PSUs are much more likely to go belly up. Also, working in an office with easily 50+ Powermacs over the years (from the G3 on), I have never observed this problem.
A possible fix for a highly unstable G3 or G4 Tower
Please don't call this "nonsense"!!!! I hope this hint can help people have a working computer again...
A possible fix for a highly unstable G3 or G4 Tower
Well, I was convinced for 4 months that my Smurf was toast. I could boot up from CD, but could not boot up on a drive attached to the primary IDE bus or a drive connected to an IDE66 PCI card, despite what felt like a dozen reinstalls. I thought it was the PCI card, memory, tried to pull everything. I finally detatched everything from the primary bus and booted with the only hard drives connected to the PCI card. It's been working like a dream ever since.
A possible fix for a highly unstable G3 or G4 Tower
I bought (on ebay) a sawtooth logic board to put in my Smurf.
A possible fix for a highly unstable G3 or G4 Tower
Like everybody else, I'm a little unclear on exactly what "worn out" means.
I've noticed weird interactions with firewire and USB devices and my Mac G4 boot process. Remember that USB and firewire are involved with the boot sequence of the machine. Specifically, I had a situation where my machine woudn't boot until I removed a firewire compact flash-mem card reader. Could there be some other weird interaction like this causing your problems? It's easy to imagine changed behaviors if you're not actually conducting a controlled experiment.
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A possible fix for a highly unstable G3 or G4 Tower
I'm right with you. IDE controllers can fail, just like any other component, but that is an extremely unlikely event. These may be old machines, but such a failure is much, much less likely than a failing hard disk (servers and video production machines, you say?), mis-configured or buggy disk firmware/jumpers, or bad cables. If this is a school setting and happening on multiple computers of varying models, add to this the possibility that your master image is corrupt. It is well-documented that some older Apple IDE controllers are buggy, and replacing the OEM drives with new-generation ones can expose those issues. |
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