This bug is due to usb burning tool, I had the same issue with Ultraiso but with the latest version of Rufus; I didn't face it again.
Thank you -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/500822 Title: /init: line 7: can't open /dev/sr0: No medium found To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+bug/500822/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs