ASUS Chromebook "Flip" c100P Developer Mode
Before you can install Linux on the c100p you must put the device into “Developer” mode. Developer mode essentially resets the c100p and unlocks the device.
Shutdown the device
To invoke Recovery mode, you hold down the ESC and Refresh keys and press the Power button
At the Recovery screen press <CTRL> D. Note: there's no prompt - you have to know to do it
Confirm switching to developer mode by pressing enter, and the laptop will reboot and reset the system. This takes about 15-20 minutes
After enabling developer mode - At the “OS
Verification is off” screen - you will need to press:
To hard reboot the c100p in case of lockup Hold Refresh button and press the Power button
Enable booting from External storage
crossystem dev_boot_usb=1 dev_boot_signed_only=0
Reboot the system to allow the change to take effect. Use <CTRL> D to go to the original Chrome OS
Shut down the system
You now have developer mode enabled on your c100p. Be mindful of the
<CTRL> D <CTRL> U boot options outlined above.