Hello. I bought this Seagate drive to back up very important data of my Mac and PC. On the box, it does not say that the drive is compatible with the Mac. However, the sales told me that if I use the Mac disk utility to reformat the drive, the drive would be compatible with the Mac. I just found from the internet that it is not compatible with 64-bit Vista. In addition, there are lots of poor reviews on this drive in Amazon and NewEggs. Most drives are DOA, failed in 2-3 days or 2 months. Anybody used this drive with the Mac? Is this drive really defective by design? After I read all the poor reviews, I am hestitated to open the box.