Hi, Wish I would have found this sight years ago! Does anybody have any info on my PB 540C upgraded w/NuPowr 603EV@187 Mhz (33.3 bus speed). I have scoured the net and cannot find what software/procedure I need to PROPERLY get a stable OS put on this machine. I have run the gambit of different sites for doing a PPC 500 but none deal with the NuPowr Upgrade! I was able to get 7.5.3 hacked starting with 7.5 on a stock 540C, then migrating it to the upgraded one, but it won't boot to the desktop with ANY extensions unless, after all the inits load but before the "welcome to Mac OS" disappears, I hold the shift key. Sometimes all the extensions will load and no freeze at the desktop or it gets to the desktop and no extensions are loaded. If no extensions load it is very stable but without the extensions its not much fun...lol. Also when I boot from the Disk Tools floppy and try to access the disk, the system freezes with a textless error window that flashes spasmodically. Any help from someone with NuPowr experience would be greatly appreciated. I just ordered a HDI30 SCSI Disk Mode adapter that will be helpful, eventually I want OS 8.6 on it.
P.S. it has 32 megs of physical ram installed!