I believe it's the one that came with the computer (I bought it used several years ago). So if that is not the case, is there any way to get the computer started again? I only want to be able to wipe the disk so the personal stuff on the computer is not accessible to whoever gets it next. Though if it can't be saved, I guess that's a moot point.
The PowerMac6,1 is the G4 iMac.
What version OS is the disk you're trying to use? Does it say Jaguar, Panther, Tiger, or Leopard? Is it a CD or a DVD? Is the disk, black or gray?
Did you try cleaning the surface of the disk? Did you try using some compressed airto blow-out the inside of the super drive?