My bad, I assumed that you are using Grub. Anyway at LILO menu - Press [ESC] at lilo prompt try
Where X can be a,b,cd
hda = 1st IDE Master
hdb = 1st IDE Slave
hdc = 2nd IDE Master
hdd = 2d IDE Slave
If you are using SCSI / SATA use /dev/sda and so on
Where Y is partition number starts with 1
lilo.conf(5): config file for lilo - Linux man page