LILO boot error codes

During the Boot Process,When LILO loads itself, it displays the word LILO.
Each letter is printed before or after performing some specific action. If LILO
fails at some point, the letters printed so far can be used to identify the problem.
Output Problem
(nothing) No part of LILO has been loaded. LILO either isn't installed or the
partition on which its boot sector is located isn't active.

L The first stage boot loader has been loaded and started, but it can't load the second stage boot loader. The two-digit error codes indicate the type of problem. This condition usually indicates a media failure or a geometry mismatch (e.g. bad disk parameters).
LI The first stage boot loader was able to load the second stage boot loader, but has failed to execute it. This can either be caused by a geometry mismatch or by moving /boot/boot.b without running the map installer.
LIL The second stage boot loader has been started, but it can't load the descriptor table from the map file. This is typically caused by a media failure or by a geometry mismatch.
LIL? The second stage boot loader has been loaded at an incorrect address.
This is typically caused by a subtle geometry mismatch or by moving /boot/boot.b without running the map installer.
LIL- The descriptor table is corrupt. This can either be caused by a
geometry mismatch or by moving /boot/map without running the map
installer.
LILO All parts of LILO have been successfully loaded.

If the BIOS signals an error when LILO is trying to load a boot image,
the respective error code is displayed. These codes range from 0x00
through 0xbb.
See man lilo for explanation of these codes