If you are finished working with a mounted encrypted disk, unmount it. All mounted disks/partitions are automatically unmounted when the system is shut down. After the disk/partition is unmounted, all files stored on it are blocked. To do this, select a mounted encrypted disk or partition (labeled as "MOUNTED") in the main window of the program and select the "Unmount the encrypted disk" item in the right or upper bar or in the menu.
No dialog boxes are displayed when you are unmounting the disk. If there are any files opened from the disk being unmounted at the moment, the program will ask you for confirmation.