I have a problem after installed Win 7. I can’t reapir grub with orignially way. I think, something wrong in Win 7 boot loader. Win 7 boot loader is not same as Win Vista. However, I could find it in Ubuntu Forum.
$ sudo grub grub > find /boot/grub/stage1You will see hdX,Y. X and Y are number.grub > root (hdX,Y) grub > setup (hd0) grub > quit