The forum has a search function, y’know, and if you’d have used it, you would have found many articles/posts regarding secure boot:
(I don’t know if this’ll work, but I provided it to illustrate my point.)
Also, as @Aragorn said:
https://wiki.archlinux.org/title/Unified_Extensible_Firmware_Interface/Secure_Boot#Implementing_Secure_Boot
(Which should have been your first stop, really.)
But personally, I don’t like the idea of a paying a third party for permission to use my own computer, so secure boot is turned off.
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