installing os x on the replacement hard drive in my powerbook is proving to be more difficult that i originally thought. i've tried both my powerbook restore disks and my tiger disk and i get the same problem both times. when i get to the "choose destination" stage, there are no choices, even after waiting > 5 minutes (i know sometimes this stage takes a little while). when i run disk utility though, the disk shows up. would erasing it help or anything? and if so, what should i select the volume format as?