Quote Originally Posted by hhoyt View Post
I don't think this is a WUBI install.
You want 'Try Ubuntu 10.04 LTS'
You can just reinstall, but seems a shame if only your boot is messed up. So go to:

sudo su << enter superuser mode
blkid << view partitons (sounds like it is /dev/sda7 ?
mount /dev/sda7 /mnt < mount your partion
mount --bind /dev /mnt/dev < bind to your system (symlink)
mount --bind /sys /mnt/sys
mount --bind /proc /mnt/sys
chroot /mnt <<< ok, change your /root over to the REAL Ubuntu
update-grub <<< search out any O/S's
grub-install /dev/sda <<< write the boot

Reboot <<3 finger salute, followed by 'restart' or click on icon in right uppermost corner, or alt-sysreq-'b', or p.o.r.

Best of luck,

Howard, you're brilliant! This worked today.

BTW, I read about [ALT+SysRq + R,S,E,I,U,B] Next time my screen goes black and blank, maybe using this will allow me to reboot safely? Rather than power off and end up with the problem this thread responds to? Will try, but have saved your fix offline for emergencies! Thanks again!