I managed to break grub while testing a triple boot!
Pop in the gentoo disk let it do its thing
Lets chroot into the broken ubuntu system
I did fidsk -l to find my linux root and its was hda6
mkdir /mnt/root
mount -t ext4 /dev/hda6 /mnt/root
mount -t proc none /mnt/root/proc
mount -o bind /dev /mnt/root/dev
chroot /mnt/root /bin/bash
Now lets fix grub
grub
grub>
find /boot/grub/stage1
grub>
root (hd0,5)
grub>
setup (hd0)
type quit
Now type
fdisk /dev/hda
type p and press enter
my windows partion 1 was active as it has a star
so press a key to toggle and i selected 1 which was windows partition and then press W to write then reboot!! if you press P while in fdisk this tells you which drive is which ..