not the live Ubuntu? I know how to install Ubuntu on a flash drive, but that is just like having a live disc. I want to install Ubuntu officially on a usb drive, and not like the live discs that you run, because it's like just trying Ubuntu. I want to have the actual OS and have my documents, applications, etc. Is there an easy way to do that? I also would like to do this through Windows, I have Windows 7 installed.