### Kernel updates may break the setup. How to avoid?
Kernel updates (package `linux` on Arch Linux) tend to break this setup because `vmlinuz-linux` file is installed at `/boot` by default. Because EFI partition is FAT-formatted, you can't create a simple symbolic link from `/boot/vmlinuz-linux` to `/boot_efi/EFI/vzmlinuz-linux` either. Thus, after each kernel update (before rebooting!), _you must copy `/boot/vmlinuz-linux` to `/boot_efi/EFI/` folder either manually or automatically_.