Re: [arch-general] Instructions to mount efivars as readonly should be linked to in Beginner's Guide

Maarten de Vries wrote:

On 1 February 2016 at 23:29, Leonid Isaev <leonid.isaev@jila.colorado.edu> wrote:

...

Also, how can you brick a machine by simply zeroing the harddrive?

You can't (well, someone can probably think of a contrived situation where you could, there's always someone, but generally speaking). The problem is with removing certain UEFI variables in buggy UEFI implementations (which are all too common). But in this case (with buggy UEFI implementation) a simple rm -rf of the wrong directory can brick your motherboard.

-- Maarten

Interesting sidenote: In Android, all the system-level stuff is segregated to /system, which is mounted as ro by default. This is just another layer of security. --Kyle