New in here..... I am trying to install Win10 on this chromebook but always end up at the Ctrl-U command. Everytime I click, it beeps and returns to the same screen.... Following is what I did:

1. ESC+F3+Power
2. Ctrl-D
3. Ctrl-Alt-F2
4. login root
5. enable_dev_boot_usb
6. crossystem dev_boot_usb=1 dev_boot_legacy=1
7. sudo reboot

Then when I press CTRL-U (as per instructions) it just gives me beep and return to original screen. What could be wrong here? It doesn't want me to get into boot legacy screen.

Thank you very much!