Sooo, long story short, I did a mistake.
I wanted to delete files on my Windows SSD, but I couldn't delet them, because the drive was in Read-only I guess. So I cd trough the terminal to the SSD folder.
Then did sudo rm /*, which was a big mistake...
After reboot, and selecting Garuda in GRUB, the boot logo turned forever, so, I pressed F2, and found this.
Changed the topic title to accurately reflect what happened. Nobody "accidently" uses that command. But this does demonstrate what may happen when it is improperly used. It is dangerous! I note that some forums even ban its posting (not that I agree).
I remember watching a video of someone doing it, and they video'd the entire unwinding as files were deleted, and everything became unusable. Pretty interesting. I have a laptop I've almost hit my 1 year mark on (my goal), and it's a Cinnamon install I want to go to KDE on. I may do this just to see all of it's glory.