I want to make a copy of my wedding DVD, but can't seem to be able to rip all of the files. I am having a problem with one file only: the last VOB file. Its size on the DVD is 932K and on the HD I only have 928K. I've tried many programs, cleaning the DVD, etc...

Can I still copy the DVD at this point or do the IFO files have to be modified accordingly to compensate for the lost data?