Jan <tona_kosmicznego_smie...@interia.pl> writes: > Tried this, but didn't work, also tried mounting the partition at > "/boot/efi" and installing bootloader at "/boot". I'm installing Guix > form a not-UEFI machine, could this cause the problem?
Did you get the same error when you mounted at /boot/efi? If you want the USB drive to be 'portable', i.e. not tied to a single system, you can not use 'grub-efi-bootloader'. The reason is that grub-efi relies on updating UEFI firmware variables *on the running system*, to make the newly installed bootloader show up in the UEFI boot menu. For the same reason, it is not possible to use it on a non-UEFI system. It would be good to have a 'grub-standalone-bootloader' procedure that would write a self-contained UEFI firmware executable to a standard location, similar to what Guix does for disk images: https://git.savannah.gnu.org/cgit/guix.git/tree/gnu/build/vm.scm?id=4dcf32b56b824efcdb181c9f4cc7ee6c8a0ba125#n399 Would you like to try implementing it?
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