I am trying to make a backup of a DVD that I own. I've backed up many DVDs before, but I always used DVD2oneX to compress the disc image down to < 4.7GB before burning (to fit it onto a single-layer DVD-R). However, I recently purchased some DVD-R DL discs, so this time I want to burn a dual-layer disc to avoid compression. I'm having problems. I used MacTheRipper (full disc extraction) to rip the DVD to my hard drive. I end up with the usual VIDEO_TS folder. Then I used DVD Imager to make a disc image out of the VIDEO_TS folder. Apple's DVD Player can read the VIDEO_TS folder produced by MTR and the one on the disc image just fine. Everything looks great. So then I used Disk Utility to burn the disc image to my DVD-R DL at 2x (media is rated 4x) using my Pioneer DVR-109 burner. When I put the disc into my stand-alone DVD player (which has never had a problem reading my single-layer DVD-Rs), it wouldn't read it. When I put the disc back into my Mac, it said "You inserted a blank DVD. Choose an action from the pop-up menu or click Ignore." Can anyone tell me what I might be doing wrong?