WinDlg not listing all drives

I’ve run WinDlg latest version. It  IS only listing my 6x2TB drives, but  NOT my 1.5TB drive, nor my 2x3TB drives. I’m using Win 8. Any clues?

Are all of the drives directly connected to the motherboard or via USB?

All drives are connected via USB.

I see. Then try connecting the drives that are not seen directly to the computer not an USB hub and see if they will appear.