How to get rid of my CF-card?

Hi,
Just got my Openbrick+HD to work, with Debian 3.3 and it works perfect. The 
bootprocess is still somewhat clumsy: start lilo on hda (CF-card) and chain 
to MBR on hdb=20GB hd. If I remove the CF card I get a screen full of 0's.
What I would like is to be able to boot with and without de CF card in the 
slot. In both cases I would like the HD to be hdb. Is that possible? My 
lilo.conf on hdb is: 
=====================
lba32
disk=/dev/hdb
    bios=0x81
boot=/dev/hdb
install=/boot/boot-menu.b

timeout=30
prompt
vga=normal

default=linux-HD

image=/boot/vmlinuz
        label=linux-HD
        root=/dev/hdb2

image=/boot/vmlinuz-test
        label=linux-HD-test
        root=/dev/hdb2

other=/dev/hda
        label=CF
======================

Thanks 

Mike