I have a Seagate 3TB (ST3000DM001) that I have had some trouble with. Seatools for DOS (the only versions I have managed to run) claims that it is OK, but according to HD Tune it has 57848 retired sectors. I'm not able to run Seatools for Windows. The disk controller is set to AHCI in BIOS. I have read that the disk shouldn't be in AHCI, but when I change that I'm not able to boot. The disk is still under warranty and I would like to return it, but I'm not sure that the shop will take it back as long as Seatools claims that it is OK. Does anyone have any advice?