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Overview: How UEFI Secure Boot Works in Linux
(tiffybelle.vivaldi.net)
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this post was submitted on 13 Oct 2023
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First, I'd personally always opt for systemd-boot instead of GRUB when I have the choice. GRUB is just very complex and systemd-boot rather simple.
Getting Secure Boot to work isn't always trivial, especially since mainboards and TPMs don't always document how enrolling your own keys works.
personally for me, grub beaks when sdax changes but, in systemd boot doesn't. this is my main reason to prefer it. easy access to boot configuration is a plus i guess.