anchor.diff:  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.  Right click the new disk, select _Initialize Disk_, and click _OK_
  -REM   5.  Right-click on the unallocated space in the new disk and select _New Simple Volume_
  -REM   6.  Follow the wizard; in the screen _Assign Drive Letter or Path_, choose not to assign them
  -REM   7.  Open a new command line window and type MOUNTVOL
  -REM   8.  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   9.  Assign the volume an unused drive letter in the configuration variable DRIVE below
  -REM   10. Execute this script
  +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
  
positive.code: ECHO This file can be deleted.> %DRIVE%\tmp.txt
  DEL %DRIVE%\tmp.txt
  
  REM Unmount volume and check empty drive
  MOUNTVOL %DRIVE% /P
  CALL :CheckUnmounted %DRIVE% RETVAL
  IF %RETVAL% neq 0 (
  
negative.code: REM Flesh out configuration variables
  SET DRIVE=%DRIVE%:
  
  REM Attach virtual hard drive
  CALL :AttachDrive %VIRTUALDRIVE% RETVAL
  IF %RETVAL% neq 0 (
    ECHO Error: Virtual hard drive %VIRTUALDRIVE% could not be attached.
    EXIT /B %RETVAL%
  )
  
  REM Check for empty drive letter
  CALL :CheckUnmounted %DRIVE% RETVAL
  IF %RETVAL% neq 0 (
    ECHO Error: Drive %DRIVE% is already in use.
    EXIT /B %RETVAL%
  )
  
  REM Mount volume to the drive and check status of drive
  MOUNTVOL %DRIVE% %VOLUME%
  CALL :CheckMounted %DRIVE% RETVAL
  IF %RETVAL% neq 0 (
  