Hye. Now i will so you how to hide the drive in your computer systems. for this you can diffrent steps:-

1.Go to start->run.Type regedit.Now go to:
HKEY_CURRENT_USERSoftwareMicrosoftWin dowsCurrentVersionPoliciesExplorer

Now in the right pane

create a new DWORD item and name it NoDrives (it is case sensitive).
Now modify it’s value and set it to 3FFFFFF (Hexadecimal) .
Now restart your computer.
So, now when you click on My Computer, no drives will be shown(all gone…).

To unhide drives in My Computer, simply delete this DWORD item that you created.Again restart your computer.You can now see all the drives again.