Input Device Name field

    Specify the name of the disk on which the files to be saved are
    located.  You can specify either a logical device name (such as
    USER$DISK) or a physical device name (such as DKA0). For more
    information, see "Physical and logical device names" in the
    "Concepts ..." help topic.

    The default device name is your current disk.  The device must not
    be allocated by any other user.

    Press PF3 to display a box that lists known disk devices.  Use the
    arrow keys to scroll through the list of devices and press Return or
    Enter to choose a device.  Choosing a device from this box places the
    list entry in the Device Name field.  If you do not want to select a
    disk device, press PF3 again (or Ctrl/Z) to cancel the box.