Rescue openSUSE grub
By Ye Julia Li on Dec 16, 2009
NOTE: The solution has tested on openSUSE 1.2 and openSUSE 11.1.
I installed openSUSE 11.1 and Windows 7 on a single hard disk. When the Windows 7 was out of gear, I rescued the Windows 7. The Windows OS works. However, the openSUSE grub was overwritten. I rescued the grub by following steps:
 Reboot the system with OpenSUSE 11.1 installation disc.
 Select 'Rescue System' and login with root.
 Enter grub interface by executing 'grub' in command line.
 INPUT: grub> find /boot/grub/stage1
OUTPUT: (hd0, 4)
INPUT: grub> root (hd0, 4)
grub> setup (hd0)
OUTPUT displays that it succeed.
 Reboot system. The grub is rescued.