I currently have 3 HD's setup in my G4 500MHz Dual. One running 10.3.3, one that I formatted blank with OS X's Disk Utility, and one storage drive hooked up to a ATA133 card. I want to have OS9 on one drive and 10 on the other. Seems like a simple enough request however even after disconnecting the drive with X, I can't startup with the os9 cd. I just get the no viable system folder flashing question mark. I even tried disconnecting ALL the drives on my system just to see if I could startup from the cd (holding down the c key of course) and I get the same error. Was the mistake formatting the blank drive in 10? Perhaps firmware is not letting me go back to 9? Do I have to format the drive on a comp running 9 and then bring it into my system? Please help Thanks.