VirtualBox 4.0 - gave up waiting for root device

Nainstaloval jsem si VirtualBox 4. Nastavil IDE řadiči: ICH6, SATA řadiči: AHCI, Čipová sada: ICH9.

Po nainstalování Ubuntu 10.10 a následném restartu dostávám:

Gave up waiting for root device. Common problems:
 - Boot args (cat /proc/cmdline)
   - Check rootdelay= (did the system wait long enough?)
   - Check root= (did the system wait for the right device?)
 - Missing modules (cat /proc/modules; ls /dev)
ALERT!  /dev/disk/by-uuid/[guid] does not exist.
Dropping to a shell!

BusyBox v1.15.3 (Ubuntu 1:1.15.3-1ubuntu5) built-in shell (ash)
Enter 'help' for a list of built-in commands.

(initramfs) _

Co s tím?

Dotaz: VirtualBox 4.0 - gave up waiting for root device