Originally Posted by ejonesss
can the drive be transplanted from a tivo 4 to a tivo 3 or less and hacked then transplanted back?
The problem isn't the drive or software, we "could" hack the premier on that front. It has to do with hardware, breaking the chain of trust and allow the hacked software to boot.
You may need to dd_rescue your OS onto a new drive and remove the shows (or enjoy the new drive if the only bad sector is in the video's).