[saltylicorice]

You don't have to open the case to go to developer mode.

If you want debug features without opening the case, there is https://www.chromium.org/chromium-os/ccd

[abc-xyz]

Things like these are why I never bothered looking into getting a Chromebook.. developer mode? debug features? The article you liked is even more confusing.. Why can't people just stick a bootable USB in the laptop and install whatever OS they desire?