For Hide:
1. Start
2. Run & type "CMD" (without quotes) 
3. Type "Diskpart" (without quotes)
4. Type "List Volume" (without quotes)
5. Type "Select Volume # " (without quotes)
# = Volume Number
6. Type "Remove letter #" (without quotes)
# = Drive letter
For Show Drive
1. Repeat 1 to 5 steps
2. Type "Assign letter #" (without quotes)
# = Drive Letter
