Four bytes, F0 0F C7 C8, would halt any original Pentium so completely that only physically rebooting brought it back. Any program, any user, no special privileges needed.
Four bytes could freeze any Pentium in 1997In November 1997, the world learned that the byte sequence F0 0F C7 C8 would stop any original Pentium, Pentium MMX, or Pentium OverDrive. The Pentium F00F bug made it so that any…boingboing.net