Carlos, unless the dvd-r is really a dvd-rw, then it is impossible to damage it by merely mounting it. Even if it is an -rw, you cannot write to it by mounting it, this would require a special packet writing setup which Ubuntu does not support out of the box yet.
It's much more likely that the DVD simply became physically damaged due to dust, scratches, etc. If you insert it, can you do dmesg > dmesg.txt and attach dmesg.txt here? If you do another copy of that DVD, is it recognized and mounted in Ubuntu? -- hal detects written DVD as empty https://launchpad.net/bugs/14692 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
