Hiding a drive in windows 7 is quite easy and can be done in less than a minute. Here is the process, how to hide your Personal Data drive and how to bring it back in your Pc Hard-Drives list on My Computer.
1.Right Click on My Computer and Click Manage
2.On the Left Side Bar Click Disk Management
3.Choose a drive You want to Hide from the List (WARNING: DO NOT TRY TO REMOVE/HIDE YOUR OPERATING SYSTEM DRIVE LIKE (C:) , AS IT WILL CAUSE SERIOUS DAMAGE TO YOUR SYSTEM)
4.Right Click on the Selected Drive and Move your Cursor to Change Drive Letter and Paths.
6.A warning Box will Appear Click On YES to Confirm.
8. To bring Back the Drive follow these Steps.
Right Click On the Hidden Drive Name and again select Change Drive Letter and paths.
9. Click Add and then Click OK
10. Click OK on Nest Screen
Feel free To ask if having any Problem via Comments Below.