I recently installed Ubuntu 12.10 on my Lenovo Thinkpad SL-510. The computer has been working for several weeks now with no problems.
Today when I turned the computer on I got a blank purple screen. Turning it on again (after a forced shutdown) I get to the grub screen. Selecting Ubuntu results in the following:
mount: mounting /dev/mapper/ubuntu-root on /root failed: Invalid argument
mount: mounting /dev on /root/dev failed: No such file or directory
mount: mounting /sys on /root/sys failed: No such file or directory
mount: mounting /proc on /root/proc failed: No such file or directory
Target filesystem doesn't have requested /sbin/init.
No init found. Try passing init= bootarg.
BusyBox v1.19.3 (Ubuntu 1:1.19.3-7ubuntu1.1) built-in shell (ash)
Enter 'help' for a list of built-in commands.
I ran the memory test from grub and it returned no errors, but I still get this message when trying to load Ubuntu.