WHAT ARE SFV FILES?
A. For all its great points, RAR has one drawback: if there’s a corrupt part in a multiple volume archive, it won’t always correctly tell you which one is bad. If there’s just one corrupt byte, if the poster enabled the correct options when compressing, your RAR program might be able to correct it. However if there are multiple corruptions, you will need to re-get that file. The problem is, sometimes it’s hard to tell which RAR part of a multiple volume archive is bad. For this reason people have come up with various programs to do CRC checks. The most popular format is SFV, although SFV is only for Windows systems. WinSFV is frequently posted in the alt.binaries.multimedia.utilities newsgroup.