It's been a bit since I did Linux install, TurboLinux, RedHat 5.?, but ...
In the install process somewhere it asks if you want to install LILO (don't remember question). If you dind't answer yes to that then you didn't install.
Might try installing again, answer with same responses as you did last time (unless you want to add something new or change something).
Check the install notes and such before installing to see if you can find what/where the boot process is.
You will know you got it right when you boot, you get LILO displayed on the monitor, a short pause, then boot into whatever system you set as default (you can enter the name of another system to boot that before the time expires).
I had it on a Win 98 and Win NTv4.0 systems and it worked fine (eventually). Be sure to put it on you Drive Zero, if you don't, if / when you remove or loose Drive 1, 2, ..., you can't still boot (or need disk).
If you have bios protection for virus set, you need to disable for the install as it modifies the master boot record.