Ask Ubuntu is a question and answer site for Ubuntu users and developers. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

I have Ubuntu 12.04 installed on my Acer C7 chromebook. Once I installed it, I never switched back to Chrome OS. But yesterday when I turned back home, I found that my laptop led was opened, and the Chrome OS was running. How can I turn back to my Ubuntu 12.04? I usually had a screen that has a chrome logo on it every time I turn on my laptop. I always clicked Ctrl+D to run Ubuntu, but this screen is no longer exist when I reboot.

share|improve this question
Thank you again Marc for your answer and help; I highly appreciate it. I remember getting Ubuntu following these steps: Installing Ubuntu 12.04 on Acer C7 Chromebook [Complete Guide.] You can get more detailed information by clicking "more" below the video section; you might see some websites where some articles that you are familiar with. My brother, who put me in this situation, on the start page where you get to whether wait for 30 second or press "ctrl+D" to proceed to your default operating system, he followed the steps on the screen to re- – user164077 Jun 3 '13 at 11:05
pls i have a problem, i didnt partition by loginning as chronos first. i went str8 to the chrome browser n just typed in shell and installed the ubuntu package with crouton. now the command for makin ubuntu the default os doesnt work, and its a job i was given. the owner of the laptop needs it before evening.pls help, any possible suggestions are welcome. – user257423 Mar 12 '14 at 9:24

The solution was ever easier than I could imagine. The first thing one should do is to enter to the developer mode, then to log in as "Chronos" and insert the following code :

sudo cgpt add -i 6 -P 5 -S 1 dev/sda

Then type :


... and reboot. This should make Ubuntu your default system. Special thanks to you mr Marc for your help and stand!

share|improve this answer

See if this helps:

How to Install Ubuntu Linux on Your Chromebook with Crouton

share|improve this answer
I can't know how you installed Ubuntu, it sounded to me like the type of installation referenced in the article. You might have a more traditional dual-boot set-up, where you choose which operating system loads when you first turn on your computer. Lots of people do this so they can run Windows and Linux on the same computer, but there's no reason I know of that you couldn't have set up yours to dual-boot Chrome and Ubuntu. Can you remember how you got Ubuntu on the thing? Like this?… – Marc Jun 3 '13 at 2:39

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.