I have followed the instructions, burned the CD-RW's, started up in boot prompt mode, and entered 0 > boot cd:,install\powerpc\yaboot\, then typed install24 as the onscreen instructions said. I saw a long list of "0 > ok"'s and the fans began to speed up. right now, the G5 is sounding like a vacuum cleaner. What should I do? Astrochess