Create UEFI disc

# create disc image
mkfs.msdos -C /tmp/uefi.iso 2880
sudo mount /tmp/uefi.iso /mnt
sudo cp /tmp/your_uefi_files/* /mnt/
sudo umount /mnt
 
# boot to UEFI shell
press F11 on boot
 
# go to UEFI filesystem
fs0:
 
# Links
https://wiki.archlinux.org/index.php/Unified_Extensible_Firmware_Interface#Important_UEFI_Shell_Commands