Chromium OS

Chromium OS is an open-source project that aims to build an operating system that provides a fast, simple, and more secure computing experience for people who spend most of their time on the web.

All downloads are located at This will be updated daily where builds compile succcessfully..

Build Instructions for USB

  • Linux
    1. Use p7zip to extract the IMG file from the downloaded file.
    2. At the shell, run the following (where sdX is your USB stick and ChromeOS.img is the path to the IMG file you extracted):
      dd if=ChromeOS.img of=/dev/sdX bs=4M
    3. Boot from USB stick
  • Windows
    1. Use 7zip to extract IMG file from the downloaded file.
    2. Use Win32 Image Writer, then select the IMG file and select the USB device from the menu.
    3. Click on “Write”.
    4. Boot from USB stick

All builds based on x86, amd64 and ARM generic board.

If you want to install to your hard drive, follow the instructions here and here. Heed the warnings noted in the links!

Please note: there is a new behaviour with the chronos user password. The password has been removed from build R55-8777 onward and will continue to be removed for better overall security. Older builds have the password of ‘password’.
This means you need to use ‘chromeos-setdevpasswd’ from either shell or console to set your own password from build R55-8777 onwards.

By default, this also disables SSH access so if you also need this level of access, you will need to set a separate password using ‘sudo passwd chronos’. This allows the password for dev access and SSH access to remain separate if needed.

You can also just set a password using ‘sudo passwd chronos’ and this will allow for both dev and SSH access if you need to keep them the same. Do not use ‘chromeos-setdevpasswd’ if you want to keep the passwords the same.

Once installed, you can update from the Dev Server noted here.

Thanks to The Chromium Projects


2,681 thoughts on “Chromium OS”

  1. Hi! I have a problem with trackpad and mouse control on my latest C×86 vannila pack available and on the special one it s not detecting my wi-fi card. My laptop is a AOD260 Acer Aspire One and I need help. First C×86 versions don’t work OK they have the same problems as the other one’s no wi-fi no trackpad or mouse functions.

  2. Hi, I have tried to download a chromium version and do not get it to boot from USB.

    What I have done is 2 alternative ways:
    1. download unzip z7 and zip in ZIP then use chromebook recovery tool to create recovery USB –> does not boot
    2. download z7 and on windows machine with rufus created bootable usb and does not boot.

    Any hints what I might be doing wrong. I also saw on youtube movie that some of the builds do not work to do what I am doing, so am I just in bad luck? or doing something wrong.

    many thanks

  3. Hi. Great work! Thanks for your builds. I have an old laptop using Intel Atom 1.66 GHz without TPM chip. What do you recommend for this device? x86 or x64? I want to chromify it after. So far, your x64 build works , but it freezes and cap lock blinks after chromify ( I’ll really appreciate your help.

  4. Quick question, I’ve tried a few different builds but am having trouble connecting to my wifi. It looks like the wifi is actually turned off but I know the device’s wifi works fine because I boot with other OS’s without that issue. Is there something I’m missing? I think the wireless card in it is Broadcom BCM943142YHN_2 . Thanks!

  5. Please add WIFI compatibility with laptops Asus X555LJ Series. The net list is empty and I can’t turn on the WIFI.

  6. Hey, I was wondering if you could look into adding android support? not the Google Play Store, but APK support. kinda like that FydeOS does. that would be really neat if you could get that to work. thanks!

  7. Hi Arnold, first of all thank you for your work. You know, my Broadcom wifi card “BCM43142” used to work with your Special builds, but now it isn’t detected. It worked till v76. Is it possible to re-add support for it??

  8. I’m running VMWare with Chromium OS on a Late 2012 Mac mini server, 2.6 GHz Core i7, Intel HD Graphics 4000 1536MB GPU. I connect to the Mac mini via TeamViewer from a remote location. VMWare works and the Chromium OS virtual machine launches just fine, but mouse movement and left button clicks are ignored. Right click works and brings up a menu in the display, but the cursor sits in the middle of the screen and doesn’t respond to mouse movements. Keyboard input is fine.

    I’ve tested the same configuration using a Windows 10 virtual machine and it works as expected. I’ve also used VNC Viewer to connect to the server via a Windows box and get the same problem. So I assume there’s something about the Chromium OS build that doesn’t like the remote mouse input. Any thoughts?

  9. My Chromebook Acer CB5-311 (Tegra K1) does not longer updates by Google. Is it possible to install Chromium OS on this device?

Leave a Reply to frederick Cancel reply

Your email address will not be published. Required fields are marked *

This site uses Akismet to reduce spam. Learn how your comment data is processed.

The general witterings of a nerd