How to unhide the drive

1. Open the Run box by typing Winkey + R or Start->Run
2. Type “cmd” in the Run box. (Without quotes)
3. The command prompt will be open. Then type “diskpart” and hit Enter. (Without quotes)
4. Then type “list volume”. (Without quotes) Now, it will display all the disk partitions of your PC. (See below image)
5. Then type the drive number which you want to unhide and hit Enter. (“4” is used in the image) Then the entered volume will be selected.
6. Then type “assign letter f” (Without quotes) and hit Enter. (Replace “f” with your drive letter)
7. That’s it, you have done, your partition will be back. Then just restart your system once to better performance.