ChromeOS netbooks include an actual ROM (not eeprom) that starts a boot chain that cryptographically evaluates each next step for signed google code. It does ha

ChromeOS netbooks include an actual ROM (not eeprom) that starts a boot chain that cryptographically evaluates each next step for signed google code. It does have a dev mode feature where unsigned code can be run, but it makes it a slow and somewhat annoying boot so that the user understands they aren't running a blessed chromeOS. If you really wanted to run something other than chromeOS all the time, you'd likely not want that feature.