I have a G3 iBook (Opaque 16 VRAM,700mhz,256mbRAM) that when i power it up it shuts down right after that. I have hooked it up to a desktop Mac to run diagnostics on the hard drive it shows this "Incorrect block count for file "mach" (it should be 1 instead of zero) incorrect block count for file "mach sys"(it should be 148 instead of 46) then it shows overlapped extent allocation keeps saying it needs to be repaired I have tried 3 times to repair the hard drive and still shows the volume "Macintosh needs to be repaired" wondering whats wrong with it the hard drive or logic board? I am saving all data using HFSExplorer as I post this. Feel free to PM me on this issue