Advertisements IIRC there was one, possibly two posts on other threads that indicated that a TiVo still had problems after replacing the hard drive. I don't recall if they used a fresh image and if not, it's possible that whatever the problem they had was transferred to the new drive if it was fully copied over. However AFAIK no one else has had recurring issues after a hard drive replacement/upgrade. Again, our Series3 didn't have any issues prior to installing the upgraded drive nor has it had any since. Of course, YMMV.