A unified kernel image (UKI) is a single executable which can be booted directly from UEFI firmware, or automatically sourced by boot loaders with little or no configuration. It is the combination of a UEFI boot stub program like systemd-stub(7), a Linux kernel image, an initrd, and further resources in a single UEFI PE file.| wiki.archlinux.org
Posts and writings by Lennart Poettering| 0pointer.net
Secure boot tooling is terrible, can we do better? Currently the most widely used tooling for secure boot is the Ubuntu sbsigntools and efitools. If you are currently using secure boot both of these packages are probably installed on your system. Both of them support the basics of generating signature lists and signing the EFI variables with certificates, but they still have differences which is a source of confusion. efitools has 3 different ways of generating signature lists: cert-to-efi-ha...| linderud.dev
A few months ago I wrote up some code for mkinitcpio which teaches it how to create UEFI executables utilizing the systemd stub. The change can be found here: https://github.com/archlinux/mkinitcpio/pull/53 This is a short introduction to why the feature is great, how it makes it easier to boot your system, and how it can be used to better secure your system with something like secure boot. The Boot Process For the past decade most computers have two ways to boot.| linderud.dev
