--[ Distribution upgrade If you are upgrading or dist-upgrading, it is recommended to run /sbin/lilo after that. --[ Large initrd files and lilo By default, LILO loads the initrd file into the first 15MB of memory to avoid a BIOS limitation with older systems (earlier than 2001). However, with newer kernels the combination of kernel and initrd may not fit into the first 15MB of memory and so the system will not boot properly. It seems that the boot issues appear when the kernel+initrd combination is larger than 8MB. If this machine has a recent BIOS without the 15MB limitation, you can add the 'large-memory' option to /etc/lilo.conf to instruct LILO to use more memory for passing the initrd to the kernel. You will need to re-run the 'lilo' command to make this option take effect. If this machine has an older BIOS, you may need to reduce the size of the initrd *before* rebooting. If you are using initramfs-tools, you should replace MODULES=most with MODULES=dep in your configuration and regenerate your initrd file: sed -i -e s/MODULES=most/MODULES=dep/ /etc/initramfs-tools/initramfs.conf update-initramfs -u If you are using yaird or any other initrd generator, please consult the documentation for your initrd generator.