Hello. I had recently acquired a new(er) PC with Win2K already installed on it. I installed a second drive on it that I'd previously installed Redhat and LILO on (using an older machine) and added the Win2K choice to lilo.conf (last two lines). Here's my complete lilo.conf:

prompt
timeout=50
default=linux
boot=/dev/hda
map=/boot/map
install=/boot/boot.b
message=/boot/message
linear

image=/boot/vmlinuz-2.4.20-8
label=linux
initrd=/boot/initrd-2.4.20-8.img
read-only
append="hdc=ide-scsi root=LABEL=/"

other=/dev/hdb
label=win2k

When LILO runs and I select Win2K, it reports the following:

Loading win2k
Error loading operating system

So... it's not as straight-forward as I'd hoped. I've been going through what books I've gathered, but no help there. Can anyone tell me what I've missed?
Please help.

Judging by the contents of your lilo.conf file, Win2k is on the slave drive, IDE channel 1 (i.e. /dev/hdb).

Windows hates being on other than the first master partition. Fortunately, there is a solution: see my post on this thread for sample lilo.conf code.

Also, see this Anandtech article on dual-booting Linux and Microsoft Windows.

Thank you so much for that info. Great help!