ChromeOS Flex installation guide

1: Create the USB installer

The device that you use to create your USB installer can be different to the device you plan to install ChromeOS Flex on. How you create your installer depends on the device you're using.

  • Chromebook Recovery Utility (recommended)—Windows or Mac device with Chrome browser installed or a ChromeOS device.
  • Download from Google—ChromeOS, Windows, Mac, or Linux device. Chrome browser not needed.

All contents on the USB drive will be erased.

Use Chromebook Recovery Utility

Step 1: Install Chromebook Recovery Utility

  1. On your ChromeOS, Windows, or Mac device, open Chrome browser .
  2. Go to the Chrome web store.
  3. At the top right, click Add to Chrome.
  4. When prompted, click Add extension.

The Chromebook Recovery Utility is now an extension in your Chrome browser.

Step 2: Make sure Chrome Recovery Utility extension is turned on

  1. At the top right of your Chrome browser window, click Extensions and thenManage extensions.
  2. Next to Chromebook Recovery Utility, toggle the switch to the right.
    Optional: You can also click Details and toggle the switch to the right.

After you turn on the Chromebook Recovery Extension, in the extension panel in your browser, click on the extension to open the pop-up.

Step 3: Build the USB installer

  1. In Chrome browser, launch the Chrome Recovery Utility extension.
  2. Click Get started.
  3. Click Select a model from a list.
  4. For Select a manufacturer, find and click Google ChromeOS Flex.
  5. For Select a product, find and click ChromeOS Flex.
    Chromebook Recovery Utility
  6. Click Continue.
  7. When prompted, insert your USB drive.
  8. From the dropdown menu, select the USB drive.
  9. Click Continue.
  10. Click Create now.
    Note: During the process, it is normal for Chrome Recovery Utility to show unusual percentages.
  11. When you get a message that your recovery media is ready, remove your USB drive from the device.

Download from Google

For admins who are comfortable with creating bootable USB drives using dd command-line utility or other third-party utilities.

  1. On your device, download the latest ChromeOS Flex installer image.
  2. Use your preferred decompression tool to unzip the file.
  3. Insert your USB drive. Be sure to remove all other removable media.
  4. Create the installer. If you’re using a third-party utility, refer to product documentation. If you’re using dd command-line utility on a Linux device:
    1. Open a terminal or command line.
    2. Use the command to write the image to USB:
      sudo dd if=image_name.bin of=/dev/sdN bs=4M status=progress
      • image_name.bin—The name of the downloaded installer file
      • /dev/sdN—The USB drive

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