Your DVD is scratched and can not be read; you will need to make a new one.
** Changed in: ubiquity (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/1572690 Title: bug de mise en route d'Ubuntu 15.10 (Unity absent graphiquement) tentatives de réinstallation (avec changements de lecteurs-graveurs de DVD) avortées To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubiquity/+bug/1572690/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs