I'm trying to upgrade a Power Mac G4 mac3,1 ecm 1856. It has a 36GB hard drive in it attached to a controller card. When I boot it up it comes up with a ? in a square folder. I cannot get it to do anything else. I bought a new drive, ATA100 80GB drive that is unformatted and hooked it up to the IDE connector on the motherboard with no jumper set on the hard drive. I connected the middle connector on the cable (master) to the hard drive and connected power. When I boot I get nothing but the ? again even with holding option or C. If I put OS X 10.4 in the DVD drive and boot and hold option i get a screen with a refresh symbol, the OS x disc shows in the middle and then a right arrow shows on the right. I cannot do anything from here as it does not recognize the new hard drive? I cannot get anything to work on this and don't know what I'm doing wrong? I want to swap out the existing 36 GB hard drive with the new 80 GB hard drive but I cannot use the controller card that is currently attached to the 36 GB card because the ends of the data cable are male and the new 80 GB hard drive data port also has male pins. Please help if you understand this question. Thank you very much!