WARNING: doing this will absolutely DESTROY YOUR SYSTEM, PERMANENTLY!!!
But if you wish to continue, you can erase all the EFI variables using the rm utility, I dont think you will be able to completely zero out the chip on the system from inside of Linux as its read-only.
But to delete all the EFI variables, cd into /sys/firmware/efi/efivars
, if this directory is not availiable, either the efivarfs is not mounted, or you are booted in legacy BIOS mode. But once you are in this directory, run chattr -i ./*
as root or sudo to remove the immutable bit on all the files, then run rm ./*
as root. This WILL break your system. Only do this if you know how to restore your system using like a chip programmer.