Getting grub into a disk image (Xen/KVM for example)

Nice HOWTO that I found buried in a Debian mailing list.
http://linux.derkeiler.com/Mailing-Lists/Debian/2008-07/msg00539.html

It shows a nice trick to get GRUB installed on a disk image.

It is pasted below:
********************************************************************
Here is a complete
sequence of commands that
- creates a harddisk image
- install multiboot specification compliant kernel to it
- install grub to the harddisk image
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sudo dd if=/dev/zero of=disk.img bs=1024 count=1048576
sudo parted disk.img mklabel msdos
sudo parted disk.img mkpart primary ext2 0 954
sudo parted disk.img mkpart extended 954 1069
sudo parted disk.img mkpart logical linux-swap 954 1069
sudo parted disk.img set 1 boot on
sudo parted disk.img mkfs 1 ext2
sudo mount -o loop,offset=16384 -t ext2 disk.img mnt
sudo mkdir mnt/grub
sudo cp /boot/grub/stage1 mnt/grub
sudo cp /boot/grub/stage2 mnt/grub
sudo cp /boot/grub/e2fs_stage1_5 mnt/grub
# The contents of the `menu.lst' file should be:
#
# timeout 0
# default 0
# title minimal-kernel
# kernel (hd0,0)/minimal-kernel
#
sudo cp menu.lst mnt/grub
# The contents of the `grub.input' file should be:
#
# device (hd0) disk.img
# root (hd0,0)
# setup (hd0)
# quit
#
sudo grub --device-map=/dev/null < grub.input
# We finally copy a multiboot specification compliant kernel
# to our disk image. You can get the one I have tried here:
#
# http://altair.sk/uploads/minimal-kernel
#
# Its homepage :)
#
# http://altair.sk/mediawiki/index.php/Minimal_Kernel
#
sudo cp minimal-kernel mnt
sudo umount mnt
# And you can boot it ...
qemu -m 100 -hda disk.img -boot c -no-kqemu
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