https://wiki.osdev.org/UEFI https://wiki.osdev.org/UEFI There are several pages here under the UEFI tag. There are also some application guides and a few polis

https://wiki.osdev.org/UEFI https://wiki.osdev.org/UEFI There are several pages here under the UEFI tag. There are also some application guides and a few polished bootloader documents.