I installed ChrUbuntu 13.04 and it works great. Recently, I was updating some programs when a pop-up appeared asking if I wanted to upgrade to the newest version. I didn't realize that it was still unstable and buggy. I am unsure on how to upgrade. I've been told that I need to wipe the Ubuntu partition completely, but I don't see why that is necessary.

Basically I want to remove Ubuntu 13.10 and install 13.04 on the partition where 13.10 used to be.


2 Answers 2


I had the same problem as you yesterday, where after upgrading to Saucy, launcher bar was wonky, etc.

Since I don't use ChromeOS at all and have already voided my warranty with a RAM upgrade, I chose to short the firmware write-protect jumper and overwrote that with coreboot / seabios. Now it runs Saucy perfectly and can boot any bootable USB live CD, installer, etc. Full instructions found here: http://johnlewis.ie/pre-built-coreboot-firmware-for-chromebooks/

What I did:

  • Backup files to external drive
  • Download Ubuntu 13.10 64-bit .iso
  • Create bootable USB stick in Chrbuntu by using gparted to make a 1 GB fat32 partition, and usb-creator-gtk to write the .iso image and boot sector
  • Run sudo cgpt add -i 6 -P 0 -S 0 /dev/sda in a terminal to make it reboot to ChromeOS
  • Shut down
  • Remove back cover and fold a small piece of aluminium foil to close write-protect jumper "under black plastic" in this picture, although on my particular machine, there was no plastic shield and the jumper was exposed
  • Start up and login
  • Ctrl+Alt+t to get a crosh tab
  • type shell
  • type sudo flashrom -r <removable media path>/stock-firmware.rom (Important if you want to revert to ChromeOS, as apparently each Chromebook has a unique serial written in its firmware.)
  • type wget http://johnlewis.ie/coreboot-c7-04092013.rom (Download John Lewis' firmware image)
  • type sudo flashrom -w coreboot-c7-04092013.rom
  • Shut down
  • Remove aluminium foil to re-enable firmware write-protect (or coreboot won't start)
  • Plug in bootable USB stick, USB mouse and start up (trackpad is not available yet)
  • Hit F10 at boot selection screen and 2 to boot from USB
  • Install Ubuntu normally
  • Edit /etc/modules and add lines:


  • Reboot and trackpad should start working


Might want to take a look at this answer, it seems to address what you wish to do.

In times like this, I simply wipe everything and recreate and reinstall my partitions from scratch, just make sure you back up whatever you may need. A clean install doesn't take too long, and then you don't have to worry about things not working - or at least, things you don't already expect on a fresh install and haven't addressed before.

  • I found that post earlier but, it doesn't quite answer my question. How do I wipe everything? how do i recreate the partitions?
    – Daniel
    Oct 18, 2013 at 4:26
  • How did you install Ubuntu originally? Do what you did last time. Upon installation Ubuntu will give you a few options on how it should install, one of those involves wiping the partitions completely and recreating them itself. Oct 18, 2013 at 4:32
  • 1
    Oh, I installed it using this guide chromeos-cr48.blogspot.com/2013/05/…, since it downloads and installs it directly i didnt know it would be able to remove or modify anything. ill try and let you know how it goes, Thanks!
    – Daniel
    Oct 18, 2013 at 4:42

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