How to enable Developer Mode in ChromeOS The first thing you need to know is that turning on Developer Mode wipes your login information and any locally stored data.

Therefore, back up all important files before you enable the developer mode. To enable developer mode on a Chromebook running Chrome OS, follow these steps: Turn off your Chromebook.

On this last reboot the system will wipe your data and load the developer mode version of Chrome OS. That entire process takes about 5 minutes.