i had a pc die so I took the old drive old and want to put it in the g4. The drive is formated with xp. I was planning on installing drive and using disk util to format. But when the drive is plugging in I get the folder on boot and it will not boot. Could it be from the windows MBR? Or is there a hard drive limit on a computer this old. Drive one is 400 gig and the one im trying to add is 120 gig.