Ever wondered if your $249 e-book reader was able to run a full-fledged desktop operating system? XDA member has prepared a guide to allow users to run Ubuntu on the Barnes and Noble’s tablet slash e-book reader. The devices like tablets should be ideal for this OS as they don’t have the limitation of a relatively small screen like the smartphones do (even if the HD2 has a 4.3 inch screen, it’s still small for a computer’s standard).
First off, you need to have rooted your Nook Color. The Ubuntu install boots off of the SD card, and as such won’t replace the Android OS the Nook Color ships with. To run Ubuntu on your Nook Color, you use an Android VNC app. It’s all detailed over on this forum thread, and make sure you follow the instructions precisely if you’d like to see how everyone’s favorite flavor of Linux performs on the Nook Color.
Full Guide: How to Ubuntu on Nook Color!