This policy setting allows you to hide these specified drives in My Computer.This policy setting allows you to remove the icons representing selected hard drives from My Computer and File Explorer. Also the drive letters representing the selected drives do not appear in the standard Open dialog box.If you enable this policy setting select a drive or combination of drives in the drop-down list.Note: This policy setting removes the drive icons. Users can still gain access to drive contents by using other methods such as by typing the path to a directory on the drive in the Map Network Drive dialog box in the Run dialog box or in a command window.Also this policy setting does not prevent users from using programs to access these drives or their contents. And it does not prevent users from using the Disk Management snap-in to view and change drive characteristics.If you disable or do not configure this policy setting all drives are displayed or select the "Do not restrict drives" option in the drop-down list.Also see the "Prevent access to drives from My Computer" policy setting.