Ubuntuがgrubで止まってしまう

以下のようにして手動boot

sh:grub> linux /boot/vmlinuz-(Your version of the kernel) root=/dev/(Your Windows partition) loop=/ubuntu/disks/root.disk ro
sh:grub> initrd /boot/initrd.img-(Your version of the kernel)
sh:grub> boot

http://www.omaregan.com/?p=583