I totally pulled a LTT and removed my kernel. >_< There was a "real time" kernel listed in apt, and I installed it because I was curious if it would reduce lock latency for a project I was working on. (I wasn't trying to solve a problem, just curious) It didn't and I figured it was probably a bad idea to leave it installed. So I did an apt remove, and the rest went something like this.
Apt: Are you sure you want to remove the your kernel? Y/N
Me: Oh jeez... I don't want to do that.
Motor Memory: Y
Apt: Are you really really sure? Your computer will not boot if you do this. Y/N
Me: Oh, crap! That's not what I meant to do. Definitely not!
Motor Memory: Y
Me: No! Why would my brain betray me!?
Fortunately this was on a PopOS machine, so I booted into the recovery partition. Even if fixing it only took a minute, I still felt very very dumb. >_<
Doesn't Windows break dual booting semi-regularly? I've always avoided it as I've had friends get burned by this in the past. I guess I just keep different OSes on different drives, but that obviously isn't feasible for everyone.