Thanks JohnBoy,
I don't know the file system. How could I find it? I used Nero 6.6, if that helps.
I am not the one who could say anything about such software unfortunately ..... I have no Win install.
Only reason I asked the question is that I recall some time ago that Win was using a newer UDF than Linux had available.
There is also the possibility that Nero has some special thing done to their disk when writing ........ although I would not expect that to prevent READing from the media.
Thinking about it, the UDF version might be mentioned in Nero someplace ...
regards.