Ok, so bare with me i may get confusing here... years ago i got 10.4 Tiger to upgrade my emac and it installed fine with no problems. For compatibility issues with software i had at the time i needed to reinstall back to 10.3 Panther. However due to gaining new software im now in a position where i can now upgrade to Tiger once again! Unfortunity even though I have exactly the same installer discs and emac i had before its now decided not to work. When i restart with the installer disc it now Kernal Panics with a message that begins with the sentence 'Unable to find driver for this platform:"PowerMac4,4" Any ideas what could have happened over the years to cause this?