@echo off
Echo AutoBootVHD-BCD.cmd written by Dan Stolts Http://itproguru.com
echo.
if "%1" == "" (
    goto :Usage
)


if "%1" == "/?" (
    goto :Usage
)

if "%1" == "-?" (
    goto :Usage
)

set VHDFILENAME=%1
set VHDDESC="Boot2VHD"
if not {%2} == {} (
    set VHDDESC=%2
 )



@echo VHDFileName=%1
@echo Creating VHD boot entry for %VHDDESC%....

Rem we need to store the output of the copy so we can reuse the GUID
Rem    We could do this without a temp file but it would be much harder to read
Rem    Need to have write permissions in the %temp% folder  (assumed)
cmd /c " bcdedit /copy {current} /d %VHDDESC% " > %temp%\tmpVHDGUID.txt

Rem Find the GUID in the output of the BCDEdit   
FOR /F "tokens=7 delims=. " %%A in (%temp%\tmpVHDGUID.txt) DO set GUID=%%A

@echo VHD boot entry GUID = %GUID%

Rem We need to strip out the drive of the filename parameter  
Rem  ~pna in for loop = Path+Name+Extension
Rem

echo %1
Rem  You must use the quotes in the for loop
for /F %%B in ("%VHDFileName%") do set VHDBCDFName=%%~pnxB

echo.
Rem cleanup temp file
del %temp%\tmpVHDGUID.txt

@echo Configuring VHD boot entry.... 
@echo. 
@echo setting Device... vhd=[locate]%VHDBCDFName%
bcdedit /set %GUID% device vhd=[locate]%VHDBCDFName%
@echo setting OSDevice... vhd=[locate]%VHDBCDFName%

bcdedit /set %GUID% osdevice vhd=[locate]%VHDBCDFName%

@echo Setting detecthal on 
bcdedit /set %GUID% detecthal on

set vhdDEFAULT=0
Rem If they did not pass a BootMenuDescription the -d will be %2
if `%2` == `-d` (
 set vhdDEFAULT=1
 @echo Default Enabled..
)

if `%3` == `-d` (
 set vhdDEFAULT=1
 Echo Default Enabled...
)


if %vhdDEFAULT% == 1 (
  @echo Making VHD boot entry the default....
  bcdedit /default %GUID%

) 

@echo.
@echo VHD boot configuration complete. 
@echo   Please restart your machine to use the new option!
@echo.
@Echo run bcdedit to see the new entry
@echo.


goto :Exit


:Usage

@echo.
@echo NOTE:  You must run the command from an elevated command prompt.
@echo.
@echo Syntax: AutoBootVHD-BCD.cmd (VHD_FileName_AND_Path) [BootMenuDescription] [-d]
@echo.        BootMenuDescription is optional and defaults to "Boot2VHD"
@echo         -d is optional and will make this entry the default boot option 
@echo Ex: AutoBootVHD-BCD D:\bootvhd\Boot2008R2.vhd My_Boot_To_VHD -d
@echo .
@echo If you have a path or description with spaces put quotes around it 
@echo Ex: AutoBootVHD-BCD "D:\My VHds\Win 2008 R2.vhd" "My Boot2Vhd" -d
@echo .
@echo Written by Dan Stolts ITProGuru no warranties, Use at your own risk   
@echo see blog post at ITProguru.com 
@echo.
@echo NOTE:  You must run the command from an elevated command prompt.

:Exit
	Rem the following commands were used for debugging only.
	rem bcdedit 
	Rem pause
	Rem bcdedit /delete %GUID%
@Echo.
@Echo written by Dan Stolts (ITProGuru) provide feedback to http://ITProGuru.com
@Echo.
@Echo.

Rem - 2012/03/01 - Added quotes in FOR Loop to eliminate issues with folder structure and names bigger than 8.3