9. Once the disks are formated and files are being copied from the CD, switch to a virtual console (CTRL-ALT-F1) to install grub on both disks. If you fail to do this, you will need to boot from the install disk and use rescue mode to make your system bootable.

grub
> device (hd0) /dev/sda
> root (hd0,0)
> setup (hd0)
> device (hd1) /dev/sdb
> root (hd1,0)
> setup (hd1)