In a thread started by Patmann "the perfect way i make DVDs" vurbal wrote at the bottom "BUP files are simply backup copies of IFO files. That's why every IFO file has a corresponding BUP file. The only time they're even read is when your player has problems reading the IFO." I have a dvd iso on my hardrive which is missing a BUP file which is needed to burn the disc. is there any chance i can make a BUP out of an IFO file (which I do have) bearing in mind I don't do any coding or scripting. basically is there a program which will do it for me? have a look around the forums and cant find anything to help me, i posted in advanced as i found the above quote in this section - apologies if you think i should have posted somewhere else.