Choose Google Chrome OS Flex from the manufacturer dropdown.

Press and hold the Option (Alt) key immediately after the startup chime. Select your USB drive from the list of bootable devices. Step 2: Try it First vs. Install

Unlike standard Chromebooks, ChromeOS Flex does not support Android apps or the Google Play Store. It is strictly for web apps and Linux environments.

Differences between ChromeOS Flex and ChromeOS - Google Help

Help you find the for your specific brand of computer.

If you search for "Chrome OS Flex ISO" and find downloadable files on third-party websites, be extremely cautious . These are often unauthorized modifications or, worse, malware. Always stick to the official source from Google.

Google provides two official ways to obtain the Chrome OS Flex installer:

I can walk you through creating a "live" USB that doesn't delete your Windows installation.