[CentOS] In A UEFI World, "rm -rf /" Can Brick Your System

Mon Feb 1 23:26:59 UTC 2016
Chris Adams <linux at cmadams.net>

Once upon a time, Valeri Galtsev <galtsev at kicp.uchicago.edu> said:
> All true, except for: to actually write stuff permanently to hard drive
> (that is modify whatever the content of hard drive is) the system needs to
> access /dev/sda1 (I call from now /dev/sda1 device which "/" filesystem
> lives on), and once /dev/sda1 is deleted there will be no further hard
> drive write operations.

Incorrect.  Once the filesystem is mounted, the kernel access doesn't go
through the filesystem /dev node, similar to how once rm is running, it
doesn't need the /lib64/libc.so.6 node.

Chris Adams <linux at cmadams.net>