*** This bug is a duplicate of bug 156778 *** https://bugs.launchpad.net/bugs/156778
You could remove the cdrom source with the software-propoerties tool to continue with the upgrade. But it does sounds like there is a problem with the CD (scratch, bad burn)? ** This bug has been marked a duplicate of bug 156778 [Master] update-manager gives useless error message for invalid sources.list lines -- Faild to fetch cdrom https://bugs.launchpad.net/bugs/157238 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs