One of my JMFS 2TB (WD20EURS) Upgraded Premieres, just popped up the following message on Restart. The TiVo box has detected a serious problem and is now attempting to fix it. This will take about 3 hours. Please Do not Unplug or Restart the TiVo Box. Has anyone ever seen this, I am assuming possibly a bad sector was encountered upon restart. There was and is no abnormal noise that the HDD is making, the HDD is about 27 months old. Does this process usually work to get it back up and running? I think I will order a new 2TB HDD anyway, and just replace it even if it comes back up.