I have used DVDXCOPY for several copies with no problem. Yesterday I tried to backup a dual layer DVD. It's about 6-7GB (16 chapters ). I chose chapter 10 as the seperating chapter ( seems the default one ). When the first disc was done I tried with my player. It stopped somewhere during the 10th chapter ( apparently the end of this disc ). I tried DVDXCOPY again. The same thing happened with Disc 1 ending at the same point as my first try. I also found that when I choose chapter 9 it needs about 4.7GB. But if I choose chapter 10 it needs 4.4GB. That really puzzled me. Can anyone help me solve this problem? Thank you.

Huaien