I've been running Ubuntu 10.10 on VirtualBox on Windows. Today I got the following error message:
Target filesystem doesn't have requested /sbin/init.
No init found. Try passing init= bootarg.
BusyBox v1.15.3 (Ubuntu 1:1.15.3-1ubuntu5) built-in shell (ash)
Enter 'help' for a list of built-in commands.
(initramfs)
What is wrong?