install ubuntu via crouton in a chromebook

install ubuntu crouton

1. open a browser and go to https://goo.gl/fd3zc, that will download crouton

2. hit Ctrl+alt+T and then type shell and press enter
$ shell

3. install ubuntu via
$ sudo sh ~/Downloads/crouton -r trusty -t xfce
#that will install ubuntu 14.04 with xfce desktop environment

4. to list available versions:
$ sudo sh ~/Downloads/crouton -r list

5. to list available desktop environments:
$ sudo sh ~/Downloads/crouton -t list

6. delete all installed chroots
$ sudo delete-chroot -ad

7. delete/uninstall a particular chroot/ubuntu version
$ sudo delete-chroot trusty

8. go to: https://github.com/dnschneid/crouton for more.