Backing up with DRU-500A

[PikachuX]

I read the forums and I followed the sticky on how to backup using PrimoDVD 2.0 however it doesn't support it. So I used my dvd reader to create an image of Guilty Gear X2 and then burned the .gi file with recordnow [the one that came with my dvd writer] but 4 coasters later, I figured something's wrong. Man, what's the best way to backup using my burner? Thanks in advance.