is the parabola wiki incomplete? - it surely would be a good starting point, at least

https://wiki.parabola.nu/Installing_Parabola_on_Libreboot_with_full_disk_encryption_(including_/boot)

Sorry, I answered in the attached file, because the system is not very user friendly and this message pops up every time.

Sorry, that post has too many non-dictionary words. Consider putting long command-line outputs and URLs into a file and attaching it with the 'Browse' button below

pedro - that restriction is for new users only - those restrictions are removed automatically; and your account is mature enough now

it is actually very user-friendly; because that notice is telling you exactly what to do, as a new forum user, to post complex messages - the alternative, is that new users would not be able to post complex messages (because the alternative to that, is tons of spam)

Understood, thanks for the explanation. And I didn’t understand why the system perceives a regular test as spam)

Did you manage to read my message that I attached as a file?

the wiki install guide for libreboot + FDE should be sufficient for any common computer - there is little in that guide which is specific to libreboot - those bits can be ignored for other computers

there is really very little in that guide which is specific to parabola - the process of setting up a FDE system is the same, for any common computer, and for any OS

Thank you for your answer . I looked at the instructions, it differs from what I'm looking for, that is, the /boot partition on a separate flash drive and the key on a separate flash drive. Thank you very much for the information and help!