it would be nice if tivo could add error correction to all boxes especially starting with series 4. make the error correction like it is on a pc. while recording if a bad sector is detected then it locks out that sector and re writes the data to another sector. and do this on the fly using something like crc checksum. tivo you may say this cant be done retroactively. helloooowwww!!!!! yes it can be done retroactively it can be done in software. the data is written to the drive then verified and rewritten if bad sector is detected and sector is locked out.