On Mon, February 1, 2016 4:24 pm, Gordon Messmer wrote: > On 02/01/2016 01:59 PM, John R Pierce wrote: >> would deleting the inode /sys/(whatever) actually modify UEFI memory? > > Yes. That is how the UEFI management interface works. Will doing rm -rf / actually delete anything in /sys? IMHO, not. The above command first will get to removing /dev, and it will delete /dev/sda1 or whichever device / filesystem lives on. And after that the command will fail, as there will be nothing accessible under / on that system after device root filesystem "/" lives on will be deleted. So, IMHO, that nasty command will never get to /sys, so all related to UEFI vars controlled through /sys filesystem will stay as they are. You will brick the box, but only in a sense you will have to restore /boot on your hard drive and /bin which these days is symlink (on CentOS 7), so actual content of /usr/bin where symlink points will stay intact. And portion of /dev - whatever alphabetically is before root filesystem device. Valeri ++++++++++++++++++++++++++++++++++++++++ Valeri Galtsev Sr System Administrator Department of Astronomy and Astrophysics Kavli Institute for Cosmological Physics University of Chicago Phone: 773-702-4247 ++++++++++++++++++++++++++++++++++++++++