- Hold Esc + Refresh and then press the power button. The Chromebook will restart and give a warning about the OS being missing or damaged Press Ctrl + D to bypass this message. It will now ask if you want to turn os verification off. Press Return to continue into developer mode
- The Chromebook will now prepare the os for developer mode. Just leave this to run for a good few minutes. It will boot backup to chrome when finished. Everytime you restart you chromebook from now on you will get an OS verification warning. you can either wait 30 seconds and the Chromebook will boot, or you can skip this message by pressing Ctrl + D
install crounton (https://github.com/dnschneid/crouton)
- Open browser and download crouton from http://goo.gl/fd3zc
- Press Ctrl + Alt + T on your chromebook to open a terminal window.
- Input
shell - sudo sh -e ~/Downloads/crouton -t core # or cli-extra
- make chrome file writeable in crosh shell(https://www.chromium.org/chromium-os/poking-around-your-chrome-os-device)
sudo /usr/share/vboot/bin/make_dev_ssd.sh --remove_rootfs_verification