HI all, the stock 250gb hdd that came with my MBP just conked out for some reason. the drive couldn't be detected in Disk Utility whether it be used in an external enclosure or connected directly to the MBP's SATA connector. now here's the weird thing, when i checked the drive's serial number at hitachi's website for the warranty, it keeps on coming up as an Invalid Serial Number! i've been using that disk as an external HDD since the first thing i did when i got my MBP was to swap out the HDD with my existing 320gb drive. i want to have the thing replaced and i know that ASPs can do it but my question is does it have to be mounted in my MBP when i bring it in for replacement? is it possible to just maybe let them check my MBP's warranty, then they get the broken drive so that way, i won't be parted with my MBP while they replace the hdd? i'm using my mac for work and it would be such a bother if they have to take the whole thing just to replace the hdd which can easily be dettached. i actually wanted to go directly to hitachi for RMAing because of this which is why i checked the serial (which turned out to be invalid).