Well i researched and dug up some information: Most standard drives operate in cable select mode, however the drive toshiba originally supplied with the machine was set to Master. Toshiba apparently made it so you couldn't use a drive unless it was set as a master. So apparently you have to solder a couple of pins together (45 and 47 i think) and then you can use the drive. I'm gonna try updating the BIOS first though and seeing if that doesn't solve anything.
-John
EDIT: I just wanted to clarify this is a laptop we're talking about.