I had a DVD that was unfinalized (I believe). It didn't list directory. Then I went to Nero -> Disc Info, and there was an option at the down-left corner saying something like Update structure or so. I used that, and that failed at 50%. Now I still get the same info content, which is Session 1: Track 01 (UDF) and Track 02 (DATA), but of course the disc still doesn't work. Is there a program that can copy single tracks or sessions out of a DVD, whose index has been corrupted (burn failed while finalizing)?
@jimhoyle To get the data off the disc try isobuster - great program. Here's a link - I just use the free version: http://isobuster.com/
