Hello.

my system halted at grub prompt.

i did following steps to recover the Grub .
but still problem persists.

booted with installation media in rescue mode
run following commands

chroot /mnt/sysimage
grub-install /dev/hda
quit

also i tried
root (hd0,0)
setup (hd0,0)
quit

i got following message after setup command
checking if "/boot/grub/stage1" exists....no
checking if "/grub/stage1" exists....yes
checking if "/grub/stage2" exists...yes
checking if "/grub/e2fs_stage1_5"exists...yes
running "embed /grub/e2fs_stage1_5 (hd0,0)"... failed (this is not fatal)
running "embed /grub/e2fs_stage1_5 (hd0,0)"... failed (this is not fatal)
running "install /grub/stage1 (hd0,0) /grub/stage2 p
/grub/grub.conf".... sucessed
done,

please guide to resolve this problem

Which Linux Version are you using.. and i think if you create / write grub.conf by your own that would resolve soemtimes but you should know what entry you should write there or can take example from the same running version of linux system.

If you use Fedora ,
This should do.
Post fdisk -l

If you use ubuntu
http://ubuntuforums.org/showthread.php?t=1014708