Follow-up from “Dumbest Thing you have done distro-hopping?”.
Here’s mine - the laptop from which I’m typing right now has a broken touchpad that keeps jumping and clicking randomly, and does not work. Well, I can’t afford to fix it, but at the moment, I was so pissed off I punched the touchpad really hard, and the machine panicked with all the lights blinking. A few more revival abuses, and the machine was back to life, but since I was running a nixos-rebuild switch --upgrade in the background, I blew off my boot partition. I think I just broke the unbreakable distro.
Usually yes, in fact usually you might just do
suand input your root password (not your user password as you do with sudo) and fix things from there. However it depends on how he was trying to setup the yubikey, I have no experience with those but it’s conceivable that he did something wrong and the key wouldn’t work, but the rest of the system might have been encrypted and required the yubikey (which wasn’t working because of missconfiguration)Unless it’s encrypted with the yubikey in an unrecoverable state, you can simply chroot into the system and reset the password.