If you are wondering how to open a specific drive in CMD (Command Prompt), you can check the detailed instructions below. How do you open an external hard drive with Command Prompt on a Windows 10 computer?.MiniTool software provides easy and professional solutions. If you want to manage your hard drive like resize/format/repartition hard drive, recover lost data from hard drive/USB, etc. If you want to open a drive in CMD, be it C drive, D drive, USB flash drive or external hard drive, check how to do it in this tutorial.