You only have a cdrom entry in your sources.list file subsequently the upgrade fails. You need to add an ubuntu mirror to your /etc/apt/sources.list file for the upgrade to proceed and to be able to update your system with new versions of packages.
** Changed in: ubuntu-release-upgrader (Ubuntu) Status: New => Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1278723 Title: not able to upgrade to ubuntu version 13.10 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1278723/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs