Then why doesn't Tivo use such a drive in their DVR? You aren't going to have such a blip very often. If you're having one more than once every three months, your hard drive is circling the drain. Honestly though, you should never see such a blip in a healthy hard drive. Besides, what if that sector was where the OS was? Wouldn't you want the hard drive to try really hard to boot so you can watch or transfer the shows? The other tweaks in the A/V hard drive firmware are very minor in nature, and don't yield any benefits except looking good on a datasheet. All hard drives are rated for 24/7 use. You're just paying for the longer warranty for the A/V drive.