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-> GRUB: Support for UKI - Disable 10_linux or breaks at kernel updates - Create 09_custom entry -> rEFInd: - Remove fallback entry similar to other bootloaders - With UKI still one dead entry can be hidden with DEL key -> All bootloaders: - Default to UKI on if supported, if using no UKI and /efi Causes systemd boot to not load, because it needs a XTLDRBOOT part Safer default for modern setups and simpler sec boot compat
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Based on the tag grub-2.14-rc1 (see https://cgit.git.savannah.gnu.org/cgit/grub.git/commit/?id=14c2966c725774aa58a811dada3277c7095cbcb3), GRUB will support UKI Edit: I was wrong about the chainloading. + src = grub_xasprintf ("%schainloader (%s)%s/%s%s%s\n",
+ blsuki_save_default ? "savedefault\n" : "",
+ entry->devid, entry->dirname,
+ entry->filename,
+ (options != NULL) ? " " : "",
+ (options != NULL) ? options : ""); |
Contributor
Author
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Also thanks for the info :)) oh btw see the bcachefs draft ? Hehe Rest looks good to you ? Always scared when making changes to stuff like this. Altho did a lot of testing today |
Thanks to codefiles for the heads-up
Contributor
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I have seen probably most of what you have submitted. Pretty good stuff. |
Contributor
Author
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Thanks !! Starting to run out of ideas 😅 |
svartkanin
approved these changes
Jan 6, 2026
This was referenced Jan 9, 2026
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This patch makes it so that Grub supports UKI. Also makes it so that rEFInd is handled consistently like other boot-loaders (no fallback entry).
Finally it enables UKI by default if the system has UEFI and a supported boot-loader. Thanks to u/Synthetic451 u/Hermocrates and u/plasmamax1 on Reddit post and is only since mkinitcpio v40.
Making this default fixes systemdboot that needs a
XTLDRBOOTpart to function for/efi, IF UKI is not selected (something we do not have in our disk handling).Again safer default so user does not get not boot-able system.
This is fixed in
def get_default(cls)in this line