text: what is the warranty on a powerbook hard drive and how much does the apple store charge to replace one? i've got a 12" powerbook g4 with a toshiba mk4025gas hard drive that is failing. i bought it about 26 months ago. i'm looking into replacement drives, but first i thought i'd try to figure out what the warranty on the factory drive is and what it costs to have it replaced at a genius bar (parts & labor) web