i have the ATAPI IHAS124 B Burner installed on my pc, since installation it has burned xbox360 back ups fine. however now when i try & back up a game i use img burn, it's set to calculate optimal & when you start it asks to over burn or truncate but after i put the blank in & load the file it no longer asks, it just goes straight into burn which i no doesn't work.
this is a new windows installation & MB it worked fine before but i don't no how or what to do with it, any help would be great thanks jack...

have you updated the firmware on the ihas drive. No point of burning truncate anymore since you did buy the new ihas drive to burn the back up the right way.