Long time Windows user and programmer trying to make the change but still lost in the syntax. What I want to do, and Netbootin appears the answer, is take an USB external hard drive, create a boot sector (in your language) and in one partition a Ubuntu OS. My Windows computer is set to boot from the USB first. When I cold boot I should then see the new os displayed. From the UNetbooin main window I assume I should either "Select Distribution" or have downloaded an iso. The choices under the "Select Distribution" of Ubuntu confuse me (I am sorry I need such hand holding). I do not believe I want something from which an installer can be launched - I want the OS installed. I hope somebody is willing to walk an old Windows user into the new world or point me to the correct tutorial (I have read dozens but simply do not know enought to select the one appropriate).