This is what I got when I did that:

GNU GRUB version 0.97 (640K lower / 3072K upper memory)

[ Minimal BASH-like line editing is supported. For
the first word, TAB lists possible command
completions. Anywhere else TAB lists the possible
completions of a device/filename. ]

grub> root (hd1,1)
Filesystem type is reiserfs, partition type 0x83

grub> setup (hd0)
Checking if "/boot/grub/stage1" exists... yes
Checking if "/boot/grub/stage2" exists... yes
Checking if "/boot/grub/reiserfs_stage1_5" exists... yes
Running "embed /boot/grub/reiserfs_stage1_5 (hd0)"... failed (this is not fata
l)
Running "embed /boot/grub/reiserfs_stage1_5 (hd1,1)"... failed (this is not fa
tal)
Running "install /boot/grub/stage1 d (hd0) /boot/grub/stage2 p /boot/grub/menu
.lst "... succeeded
Done.

grub> root (hd1,1)

Will check reboot and see what it accomplished.