this post was submitted on 08 May 2024
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[–] ipacialsection@startrek.website 5 points 6 months ago (3 children)

You're looking at bootloaders, not kernels; you need to enroll the kernel with one of those bootloaders. Usually running sudo update-grub while in the OS will automatically detect and add any available kernels to the default version of GRUB.

If you can't boot into the OS, you can select the kernel manually from the GRUB command line: https://www.unix-ninja.com/p/Manually_booting_the_Linux_kernel_from_GRUB

[–] TheCheddarCheese@lemmy.world 1 points 6 months ago (2 children)

I have the kernel in the bootloader, problem is I need to enroll it with MOK manager to actually boot it in secure boot. But it starts in /boot/efi with no option to go back to /boot so I don't really understand how exactly I'm supposed to do it.

[–] BoyetLeonantus@sh.itjust.works 1 points 6 months ago

https://www.dannyvanheumen.nl/post/secure-boot-linux-shim-mokmanager/ seems to be a good introduction to the concept. Your distribution should have specific documentation on how to make custom kernels and secure boot work if you need more details.

If you have already made a certificate and imported it with mokutil maybe you just need to select the MokManager.efi from your screenshot and start that to enroll the key.

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