So.. I have 10.4 installed on a FW HD connected to our older G4. I turn it on and all I get is a grey screen on boot. I reboot holding option-command-shift-delete or something like that and it boots into OS 9 on the internal HD. There, I try to go to control panel - startup disk and it doesnt even see the FW HD. The FW HD is turned on.. but its making a funky noise and I dont know if its the HD thats messed up or the FW Case. I am thinking I could probably take the HD out of the FW case and put it into the G4.. or our G5 and see if the computer recognizes it. What do you think? Anything else I can try? Thanks.