Google Chrome OS is an open source operating system based on the Chromium OS project. It allows users to create a bootable USB drive to test the OS, but it may not support WiFi connectivity or guarantee that the OS will load properly. The OS also requires an Ethernet connection and users should check if their device is supported to ensure functions like WiFi and trackpads will work correctly. Adjusting boot settings may be needed if the OS does not load properly on a Windows PC.