Here some steps you need to follow :
Step 1) Click on My Computer icon and then on Manage.
Step 2) Management tab opens and after it the left side options , now you will see an option named as Disk management under Storage. Click on it.
Step 3) Here you will able to see all hard disk drive. Right click on drive you want to hide then click at option Change drive Letter and Paths
Step 4) Click on Remove after that press OK.
Drive is now Hidden
Now another problem after it is how to retrieve it
first of all you need to
Go to Disk management option, right click on drive you wish to hide or you done at which hidden operation , then go to option Change drive Letter and Paths , press add after that click OK.