cycle redundancy failure




Optical discs are prone to read errors, particularly when finger prints, fluff, etc. get on the reading surface, so redundant information is added in such a way that minor errors can be corrected. If the disc is damaged sufficiently seriously, e.g. a deep scratch running around a track, the error correction system fails to correct the error, and you will be unable to read that file on a computer by normal means. Note that only the last .VOB file that was scratched would be unreadable.