There is also systemd-stub. It is technically a bootloader. However it looks inside of itself for the kernel, ramdisk, and kernel commandline [0]. This means t

There is also systemd-stub. It is technically a bootloader. However it looks inside of itself for the kernel, ramdisk, and kernel commandline [0]. This means that you can use objcopy to put an existing kernel and ramdisk into a standalone EFI executable; without needing to recompile anything. Dracut even has a "--uefi" option that will do all of that automatically. [0] Although if secureboot is disabled, you can override the cmdline from the EFI if your firmware exposes that functionality.