LILO for two SuSEs?

If I install another copy of SuSE on a spare partition (hda10) of a PC with SuSE on it (hda6) already, how do I add SuSE to lilo.conf so that I can boot it from the bootscreen? I've already tried setting the root to /dev/hda6, but that seems to founder when it can't find the relevant initrd. Thanks Kevin