EFI and Grub

I’ve been tinkering with a Lenovo ThinkCentre M80Q. I disabled secure boot and since there is no legacy mode in the BIOS, I decided that it’s time to install Slackware with EFI. However, after the install was done, ELILO failed to boot the OS. So, I decided to use Grub.

I did many reboots, trying to fix the problem, but no luck. In the end, using Slackware’s disk as a rescue boot disk I ditched ELILO. So, I needed to chroot to my installed system, first. Long story-short: I followed these instructions from CRUX, after the install was done:

mount --bind /dev /mnt/dev
mount --bind /tmp /mnt/tmp
mount --bind /run /mnt/run
mount -t proc proc /mnt/proc
mount -t sysfs none /mnt/sys
mount -t devpts -o noexec,nosuid,gid=tty,mode=0620 devpts /mnt/dev/pts
mount --bind /sys/firmware/efi/efivars /mnt/sys/firmware/efi/efivars
chroot /mnt /bin/bash

Then, I installed Grub to the EFI partition:

grub-install /boot/efi

…and automatically generated its configuration file:

grub-mkconfig > /boot/grub/grub.cfg

The system boots. However, the video is not supported. Hmm,… looking for a simple and more up-to-date system…