grub_prefix seems wrong for separate /boot partition

[Christoph Mathys <eraserix@gmail.com>]

Hello

Not sure if I've come to the right place, but here is my story:

Yesterday, my package manager (deb on testing) decided that the time has 
come to switch to grub 1.97~beta3. Well, afterwards my system did not 
boot anymore, it was stuck in the grub shell, no menu or anything. It 
works again now and I quiet like the new grub shell (well, scrolling was 
horribly slow).

Anyway, my /boot-directory is on its own partition, which is only 
mounted if I need to change something there. Now, one of the problems 
why the update did not work was that I forgot to mount /boot and grub 
could not find the kernels (my fault).

After I've learned how to boot my system again and mounted /boot, grub 
found the kernels. However, grub_prefix seems to be wrong, pointing to 
/boot/grub instead of just /grub. I did not find a better way to fix it 
than changing the variable in grub-install. After changing grub_prefix 
to /grub and rerunning grub-install /dev/hda, everything is fine now.

Maybe grub_prefix should be setable on the command line of grub-install? 
  Or some other bad mistake on my part because of scoping the amount of 
documentation I read using google?

Christoph