Hello Joel
When you issue the reset ROMMON command in the process described in the lesson, you are essentially causing the router to boot up again by bypassing the configuration. So you will find that your running configuration is gone. But not your startup configuration. That still remains intact! If you continue on in the lesson, you will see that once you have privilege executive mode access using the enable command, you can copy that startup config back to the running config, change the enable password, and you’re all set!
So the startup config remains intact, but it is the running config that is gone. Does that make sense?
I hope this has been helpful!
Laz