I'll repeat what I wrote earlier in this thread. I am told that the E: partition is actually part of the C: drive. It is not a USB and nothing is plugged into it. It appeared about 4-5 months ago from who knows where. I was also told that this is unique to Dell computers. Attached are 3 screenshots re: its driver per your request.
I am very much relieved knowing that the D: partition is superfluous and I can go on with my existing system without starting over again. Thank you.