How to select 3 OS in lilo ?
I have 3 OS - win 98, win XP, Slackware.
When my comruter start, LILO display:

DOS
LINUX
OS/2

Partition Magic Info:

partition type size mb Pri/Log

win98 fat32 596.1 Primary
winXP NTFS 6471.5 Primary
*: extended 12472.3 Primary
*: linux ext2 3004.3 Logical
Information fat32 9366.0 Logical
*:swp-space linux swap 101.9 Logical

lilo.conf :

# LILO configuration file
# generated by 'liloconfig'
#
# Start LILO global section
boot = /dev/hda
message = /boot/boot_message.txt
prompt
timeout = 1200
# Override dangerous defaults that rewrite the partition table:
change-rules
reset
# VESA framebuffer console @ 1024x768x64k
vga = 791
# Normal VGA console
# vga = normal
# VESA framebuffer console @ 1024x768x64k
# vga=791
# VESA framebuffer console @ 1024x768x32k
# vga=790
# VESA framebuffer console @ 1024x768x256
# vga=773
# VESA framebuffer console @ 800x600x64k
# vga=788
# VESA framebuffer console @ 800x600x32k
# vga=787
# VESA framebuffer console @ 800x600x256
# vga=771
# VESA framebuffer console @ 640x480x64k
# vga=785
# VESA framebuffer console @ 640x480x32k
# vga=784
# VESA framebuffer console @ 640x480x256
# vga=769
# End LILO global section
# DOS bootable partition config begins
other = /dev/hda1
label = Windows XP
table = /dev/hda
# DOS bootable partition config ends
# Linux bootable partition config begins
image = /boot/vmlinuz
root = /dev/hda5
label = Slackware
read-only
# Linux bootable partition config ends
# OS/2 bootable partition config begins
other = /dev/hda0
label = Windows 98
table = /dev/hda
# OS/2 bootable partition config ends

fstab

/dev/hda7 swap swap defaults 0 0
/dev/hda5 / ext2 defaults 1 1
/dev/hda2 /mnt/winXP vfat defaults 1 0
/dev/hda6 /mnt/info vfat defaults 1 0
/dev/cdrom /mnt/cdrom iso9660 noauto,owner,ro 0 0
/dev/fd0 /mnt/floppy auto noauto,owner 0 0
none /dev/pts devpts gid=5,mode=620 0 0
none /proc proc defaults 0 0

Try this in your config as I think but not totally for sure that Lilo doesn't like spaces in the label name:

And always after making changes run lilo to write to the MBR.

/sbin/lilo

--------------------------------------------------------------------------------
# DOS bootable partition config begins
other = /dev/hda1
label = WinXP
table = /dev/hda
# DOS bootable partition config ends
# Linux bootable partition config begins
image = /boot/vmlinuz
root = /dev/hda5
label = Slackware
read-only
# Linux bootable partition config ends
# OS/2 bootable partition config begins
other = /dev/hda0
label = Win98
table = /dev/hda
# OS/2 bootable partition config ends

other = /dev/hda0 --------------------------> DOESN'T WORK !
fatal: open dev/hda0: No such file or directory
-------------------------------------------------------------------------------
In Red Hat 7.2 (Grub) other = /dev/hda0 ------->WORK !

Lilo doesn't won't recognize hda0, your Windows 98 partition would have to reside on another partition. What does the output of fdisk -l give you if you can post that here ?? That should help us determine where Win98 resides at ?