Floppy:
=======

$ fdformat /dev/fd0
$ mkfs -t msdos /dev/fd0
$ mount -t msdos /dev/fd0 /floppy
$ mkdir -p /floppy/boot/grub
$ cp /usr/lib/grub/i386-pc/stage* /floppy/boot/grub
$ umount /floppy
$ /usr/sbin/grub
grub> root (fd0)
grub> setup (fd0)
grub> quit
$ reboot

grub> root (hd0,1)
grub> kernel (hd0,1)/vmlinuz root=/dev/sda2 ro vga=791
grub> boot

grub> rootnoverify (hd0,0)
grub> makeactive
grub> chainloader +1
grub> boot

grub> help kernel
grub> cat (hd0,2)/etc/fstab
grub> configfile (fd0)/boot/grub/menu.lst 

CD:
===
$ mkdir iso
$ mkdir -p iso/boot/grub
$ cp /usr/lib/grub/i386-pc/stage2_eltorito iso/boot/grub
$ vi iso/boot/grub/menu.lst
...
$ mkisofs -R -b boot/grub/stage2_eltorito -no-emul-boot \
-boot-load-size 4 -boot-info-table -o grub.iso iso