Google is growing in the market with selling Chromebooks. If it is a Chromebook with Windows it is the standard way to make an image.

If it is a Chromebook with ChromeOS on it there is literally no way to gain any information at all (without knowing the Google-Credentials) or even if the credentials are known to gain data without changing the device hard drive (logical image).

As of now we haven't seen so many devices with ChromeOS but I suppose it will change quickly in the next 1-3 years.

King regards

Klaus D.