Open a terminal with : dmesg -w
Then insert your dvd, you should be able to read the right path. (Maybe /dev/sr0 ?)
Run the command again with the proper path to your dvd drive (example with sr0)
dvdbackup -i /dev/sr0 --mirror
Open a terminal with : dmesg -w
Then insert your dvd, you should be able to read the right path. (Maybe /dev/sr0 ?)
Run the command again with the proper path to your dvd drive (example with sr0)
dvdbackup -i /dev/sr0 --mirror