anchor.diff:  REM   1: Drive letter with trailing colon (e.g. C:)
   REM   2: Return value
   REM     Equals 0 if the drive is mounted
  -REM     Equals Non-zero in any other case
  +REM     Equals non-zero in any other case
   :CheckMounted
   SET DRIVE=%~1
   MOUNTVOL %DRIVE% /L > NUL 2>&1
  
positive.code:   EXIT /B %RETVAL%
  )
  
  ECHO [Script finished at %DATE%-%TIME%]
  EXIT /B 0
  
  REM This function checks that a certain drive is mounted.
  REM
  
negative.code: REM   1.  Open _Disk Management_ through the Start menu
  REM   2.  Navigate to _Action_ and select _Create VHD_
  REM   3.  Select the location for the virtual hard drive file and set the size to 10MB or greater
  REM   4.  Set the configuration variable VIRTUALDRIVE to the path of the virtual hard drive file created in the previous step
  REM   5.  Right click the new disk, select _Initialize Disk_, and click _OK_
  REM   6.  Right-click on the unallocated space in the new disk and select _New Simple Volume_
  REM   7.  Follow the wizard; in the screen _Assign Drive Letter or Path_, choose not to assign them
  REM   8.  Open a new command line window and type MOUNTVOL
  REM   9.  From the output, copy the volume name of your newly created hard drive (e.g. \\?\Volume{2f823551-0df2-11e6-96ba-806e6f6e6963}) into the configuration variable VOLUME below
  REM   10. Assign the volume an unused drive letter in the configuration variable DRIVE below
  REM   11. Execute this script
  
  ECHO [Script executed at %DATE%-%TIME%]
  
  REM VirtualDrive: Configuration variable
  REM VirtualDrive: Path of the virtual hard drive file created using _Disk Management_ during setup
  REM VirtualDrive: E.g. C:\drive\virtual_hard_drive.vhd
  SET VIRTUALDRIVE=
  
  REM Volume: Configuration variable
  REM Volume: Unique identifier for the volume; open command prompt and type MOUNTVOL to find the volume name
  