probs to boot from harddisk

after installing SLED 11 SP2 I cant boot with a grub error 15, but if I boot with the DVD and use boot from harddisk, it is possible to boot.
How to fix that?


Once you’ve got your system booted run Yast, in the System section you’ll find a module called Boot Loader. Check the settings, sounds like the root partition may be set wrong.