I am suffering from this same problem on an HP Compaq nc8439. Booting from USB key with Karmic Desktop 32-bit image.
/init: line 1: can't open /dev/sr0: No medium found /init: line 1: can't open /dev/sr0: No medium found /init: line 1: can't open /dev/sr0: No medium found /init: line 1: can't open /dev/sr0: No medium found /init: line 1: can't open /dev/sr0: No medium found /init: line 1: can't open /dev/sr0: No medium found /init: line 1: can't open /dev/sr0: No medium found /init: line 1: can't open /dev/sr0: No medium found /init: line 1: can't open /dev/sr0: No medium found /init: line 1: can't open /dev/sr0: No medium found mount: mounting /dev/sdb on /cdrom failed: Invalid argument BusyBox v1.13.3 (Ubuntu 1:1.13.3-1ubuntu7) built-in shell (ash) Enter 'help' for a list of built-in commands. (initramfs) /init: line 1: can't open /dev/sr0: No medium found mount: mounting /dev/sdb on /snap-backing failed: Device or resource busy -- [karmic] various pre-mount errors https://bugs.launchpad.net/bugs/406192 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs