The LILO bootloader has long been deprecated, in favour of GRUB, however it still has an install base on old systems that remain in production. The /etc/lilo.conf file contains its configuration. After any change in that file, it is necessary to reinstall LILO, by simply running lilo.

Each installed kernel version will have a line in this file, beginning with image=, followed by the path to the kernel file. For example: