Before you try to do the kickstart 57 (if you haven't already), if this is a tivo which you have only started using recently, then you should have a read through
http://hd.oztivo.net/twiki/bin/view/...oKeepUsingTiVo
particularly step 6 ("clear program information & to do list"), which should be done once per tivo when it is first being set up to use oztivo.

If the aove wasn't relevant or didn't fix your problem, then read on.

Expect the kickstart 57 to run for a few hours. It will do a check of the media file system (MFS) on the hard drive, which takes a while (depending on the capacity of your hard drive).
There are some more details at:
http://www.tifosi.com/rali/misc/TiVo...art-codes.html
https://www.tivocommunity.com/commun...-error.435919/
https://www.tivocommunity.com/commun.../#post-5643823

Hmm, it might be worth checking out
https://www.tivocommunity.com/commun...-error.528898/
which is talking about a S03 error which seems not related to hard drive / mfs problems.