Specifies in advance on the command line that the desired operation is to close a volume.
You would typically include the drive letter of the SafeHouse volume to be closed, or the keyword ALL to close all open volumes.
This option may also be specified without a drive parameter. Using /Unmap without any additional parameters to SDWMAP32.EXE forces the program to come up in "close volume" mode.
/UNMAP [=d | =ALL]