

How does your boot setup look? Reinstalling the bootloader or regenerating the boot image could help. Should be easy, not matter whether its GRUB2 or systemd-boot. Config is managed separately. Might want to have a look at that as well.
With Dracut it’s also very easy to generate and configure your boot image. Don’t know how it works with that Arch native tool.
Afaik most people who seriously want to have a local LLM start of off a pre-trained one from the internet…?