I inherited a powermac G4 dual 500Mhz with 768MB RAM and a Radeon 9200LE card. It had a 9GB SCSI boot drive and an Adaptec U2W apple card in there and it was running 10.3.3 Anyway I pulled the other drive out and slipped in a Seagate 10K 73GB SCSI drive I have which works fine (in my PC). I attempted to intall either 10.2 which is an original disc that came with it and it boots funny. It boots with the old apple in the middle of the screen instead of the OSX grey apple... then crashes. I tried 10.3 and similar stuff happens. If I put back the original 9GB hard drive, it boots fine. I zapped the pram and tried again and no go. Anyone know why this could be? Termination is fine, drive is ID0.