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Hello, My old mac G4 died because of a defective power unit. Rather than replace that, and having a new Mac Pro, I bought a hard disk enclosure to access the data from my old drive. However I get an error message on my Mac Pro, "this disk is unreadable by this computer". The Mac Pro does...

Hello, Thanks for replying. What should I do at this point? Replace the PSU? Or if the PMU chip is crashed, replace that first? Is it replaceable? Or is there a test to troubleshoot exactly what the problem is at this point? All the best, billbaty

Hello, After an electrical storm, even though I had my Mac G4 (733) unplugged, it would not startup. I read around on various forums and installed a new battery as well as reset the PMU. It started right up but only that once. I had to push the PMU button every time before it would startup. I...