Yes, you are right. Just remove the cdrom. remove all stuff from the sources.list file and just use the following 3 lines:
deb http://fr.archive.ubuntu.com/ubuntu/ dapper main restricted universe multiverse deb http://fr.archive.ubuntu.com/ubuntu/ dapper-updates main restricted universe multiverse deb http://security.ubuntu.com/ubuntu/ dapper-security main restricted universe multiverse Then run "sudo apt-get update" and afterwards "sudo apt-get -u dist- upgrade". You could get some errors during the upgrade - this is quite "normal". Just rerun "sudo apt-get -u dist-upgrade" several times. Finally run "sudo apt-get install ubuntu-desktop" to ensure that you have a working desktop. Reboot. -- [dist-upgrader] aborts if no "breezy main" is in the sources.list (only breezy-updates main) https://launchpad.net/bugs/55950 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
