I installed a program and placed the data on the "e" external drive. I had problems even before I started and had to uninstall program and had a computer tech re install. He didn't listen and installed data on "c" drive which won't work for me. So I uninstalled and when I am installing when I am asked to select a drive and I want to select "e" which is where I want and the "e" drive is in use as "ESP (E:) and files below that are related to the first install but it is not attached to the external drive. I am installing on another computer and that is e drive and I need both "e" drives. I have been using this system on my old XP machine for 2 years and have had no problems. When I go to "This computer" to see drives the "e" drive does not show up. How can I delete this drive?