Rev 1. - Provided Screenshot for Further Clarification.
When I convert my storage drive from a basic to a dynamic disk in Windows 10, using diskpart.exe, there is one partition but no volume to go with it. If I create a simple volume and try to retain the partition to that volume, another partition appears. This is what will keep taking place with each simple volume created. Is this normal and if so, how do you create a RAID 5 array on a single hard drive in diskpart.exe using just the one disk or do you have to have 3 separate physical disks? Also, can USB thumb drives be used for one or more of the three required disks?
Note: For clarity, please see the screenshot below where Windows is indicating a RAID 5 array exists and is denoted with the cyan color. At the time I snapped this screen shot, I had an external storage drive attached and only one internal drive attached.