I'm sorry for my poor English because my system doesn't support Chinese input. Early, I installed two OS on my PC, one is Windows XP, one is Ubuntu 7.10. So, the GRUB is in charge of my PC's boot. But last night one sudden problem occurred to it, When I turn on my PC, the choosing menu didn't show up, leaving only a black screen, So I use my live cd to boot, after that I did this:
grub> find /boot/grub/stage1
grub> root (hd0,11)
grub> setup (hd0)
Checking if "/boot/grub/stage1" exists... yes
Checking if "/boot/grub/stage2" exists... yes
Checking if "/boot/grub/e2fs_stage1_5" exists... yes
Running "embed /boot/grub/e2fs_stage1_5 (hd0)"... 15 sectors are embedded.
Running "install /boot/grub/stage1 (hd0) (hd0)1+15 p (hd0,11)/boot/grub/stage2
Error 12: Invalid device requested
So, does anybody tell me how can I recover GRUB?