Activate only one volume at a time so that you can enter its password.
In NSSMU, select.
In the Volumes list, select the encrypted volume that you want to activate.
Select or press F6 to activate the volume.
If you are prompted to enter the password, enter the password, then click.
You are prompted for the password on the first time the volume is mounted after a system reboot. The password is stored on the system until the next system reboot. You can activate the volume without the password until a system reboot occurs.