I have a Performa 6400 that I recently got. hard drive it came with is completely dead. I tried to put a burnt CD-R of 9.0.4 in and nothing, just a blinking question mark floppy disk. I was able to copy a image of the 1st disk from Mac OS 8 installer floppy and It actually shows the happy mac for 5 seconds and then ejects the disk. I'm not entirely sure if this is the disks fault or the floppy drive because the floppy drive makes some loud clicking noises. I was thinking of just installing 9.0.4 on my iMac G3 and then moving the hard drive into the performa, would this work or not? I'm not actually sure if the performa can read CD-Rs or not.