[arch-general] Initramfs fallback render

Hi all, I have always learnt that it was good practice (to use sudo instead of root su and), when we use sudo, to completely disable root login (by disabling his password). However when we need to boot into "fallback mode", initramfs asks for root password! Is there a standard/automated way to ask/permit another user via initramfs in Archlinux? If not, how do you deal with that usually? Thanks in advance for your response! Regards, -- Ismael