Instalar Galliumos , Or Crouton Or Dualboot

This will wipe all your data on your Edgar.

See the Chrome OS generic information for entering Developer mode or How-To Geek's guide for more information.

• Having shutdown your Edgar, hold down the Esc and Refresh (V35;) keys and press the Power key.
• Your Edgar will then boot into Recovery Mode and appear to warn you that "Chrome OS is missing or damaged."
• Press Ctrl-D.
• The screen will change to one saying "To turn OS Verification OFF, press ENTER".
• Press the Enter key and your Edgar will reboot.
• Your Edgar will boot to a screen that says "OS verification is OFF". If you wait, your Edgar will eventually beep several times and then boot to Chrome OS; alternatively, you can press Ctrl-D at this point to immediately boot to Chrome OS.
• Your Edgar will show a warning about transitioning - wait.
• Your Edgar will show a screen saying that it is "Preparing your system for Developer Mode". This process will take some time. A progress bar is displayed at the top of the screen.
• Eventually your Edgar will reboot one more time.
• Your Edgar will boot to a screen that says "OS verification is OFF". If you wait, your Edgar will eventually beep several times and then boot to Chrome OS; alternatively, you can press Ctrl-D at this point to immediately boot to Chrome OS.

At this point, Developer mode is enabled and OS verification has been disabled. It will continue to show the "OS verification is OFF" screen at startup.

Check this link for reference:-

https://gist.github.com/stupidpupil/1e88638e5240476ec1f77d4b27747c88

Thanks