I have been using ChrUbuntu (Ubuntu Precise 12.04) on my Acer C710 Chromebook for over a year now. I had to switch Chromebook to "Developer Mode" so I could install it. Ran perfectly, updated and even played a few games (Torchlight, Wakfu, Half-Life 1, Lugaru) One day I came home (after my wife tried to use it for internet) one day and found that it had booted to ChromeOS instead of ChrUbuntu. Stunned, shocked and confused I tried to restart and go to ChrUbuntu again, but failed over and over. After some research I found that she accidentally disabled "Developer Mode" so now it booted to the ChromeOS partition. ChrUbuntu was still there and all my files were still there, but I didn't know how to restore it. So I installed ChrUbuntu (Precise 12.04) again and has some bugs. Then I thought, maybe Saucey 13.10 would be better.... nope, Unity was slow and buggy. So once again I went back to Precise ChrUbuntu and everything is working as it was previously, but of course I had to install all the programs and games again. Then I had to restore all of my files from the server. Little did I know there was a command you can run to start it back in ChrUbuntu again without having to wipe the drive. If you have this problem try this: enable developer mode Boot up and don't login to ChromeOS CTRL+ALT+=> to access the shell Type: Code: sudo cgpt add -i 6 -P 5 -S 1 /dev/mmcblk0 Now it should boot to ChrUbuntu again. I havn't tried this myself, but there is a chance "Developer mode" will erase the drive to prepare it for OS installation. IF this happens, then there is no chance to boot to ChrUbuntu unless you install from scratch again.