https://uefi.org/
https://uefi.org/specifications
http://www.rodsbooks.com/gdisk/booting.html
http://www.rodsbooks.com/efi-bootloaders/

https://en.wikipedia.org/wiki/Unified_Extensible_Firmware_Interface
https://en.wikipedia.org/wiki/EFI_system_partition

https://help.ubuntu.com/community/UEFI
https://wiki.archlinux.org/index.php/EFI_system_partition
https://wiki.archlinux.org/index.php/Unified_Extensible_Firmware_Interface

en
https://www.tecmint.com/ubuntu-19-04-installation-on-uefi-firmware/

ru
https://losst.ru/ustanovka-linux-na-uefi
    ! in BIOS switch "UEFI Secure Boot" off
    ! EFI partition - 256M
        /boot (not /boot/efi)
    ! after install - use efibootmanager to check EFI stuff
https://help.ubuntu.ru/wiki/uefi
    ! ESP - is a special partition for UEFI startup code
        FAT-32 with boot and esp-flags
    ! it's better to use standard installer for creating this partition instead of manual gparted operating
        EFI boot (UEFI+GPT) with EF00-type, no need to mount manually

fat32, 512M, /boot/efi, flags: boot,esp
ext4,   10G, /        , flags: root

2020
AMPHN - Tutorial Install Lubuntu 20.04 (UEFI, No Swap)
    https://www.youtube.com/watch?v=o4Y4hayHfy8
2019
ITSpecialistNotes - Lubuntu 19 with UEFI ru
    https://www.youtube.com/watch?v=EufMRWvUisk