How to Hide and Conceal Hard Disk Drives

•  Click Start.
•  In the Search field, type gpedit.msc and press Enter.
• The above command should have granted you the access to the Local Group Policy Editor window.
• Now follow this path: User Configuration — Administrative Templates — Windows Components — Windows Explorer
• At this point, look for Hide these specified drives in My Computer. Double click it.
• Click Enable and from the drop down menu select the drive you want to hide.