@echo off
setlocal
rem Source drive, Destination drive
set src=S:
set dst=T:
set bcdentry={default}
set bcddrive=%dst%

echo List of files to be copied
xcopy %src%\ %dst%\ /exclude:%~dp0\cloneexclude.txt /e /c /i /h /k /x /y /b /l
echo Copy files from %src% to %dst%
xcopy %src%\ %dst%\ /exclude:%~dp0\cloneexclude.txt /e /c /i /h /k /x /y /b /w

echo Make sure boot manager are not compressed.
compact /u %dst%\bootmgr %dst%\ntldr %dst%\grldr.* %dst%\menu.lst

echo Adjust \DosDevices\C: value
set dstsignature=
for /f "skip=2 tokens=1,2,*" %%I in ('reg query HKLM\SYSTEM\MountedDevices /v \DosDevices\%dst%') do (
set dstsignature=%%K
)
reg load HKLM\systemdst %dst%\Windows\system32\config\system
reg add HKLM\systemdst\MountedDevices /v \DosDevices\C: /t REG_BINARY /d %dstsignature% /f
reg query HKLM\systemdst\MountedDevices /v \DosDevices\C:
reg unload HKLM\systemdst

echo Copy bootmgr, BCD to %bcddrive%
if not exist %bcddrive%\bootmgr xcopy %src%\bootmgr %bcddrive%\bootmgr /c /h /k /x /y
if not exist %bcddrive%\Boot\BCD xcopy %src%\Boot\ %dst%\Boot\ /e /c /i /h /k /x /y /b

if not exist %bcddrive%\Boot\BCD goto endbcd
echo Update BCD entry.
bcdedit /store %bcddrive%\Boot\BCD /set {bootmgr} device partition=%bcddrive%
bcdedit /store %bcddrive%\Boot\BCD /set %bcdentry% device partition=%dst%
bcdedit /store %bcddrive%\Boot\BCD /set %bcdentry% osdevice partition=%dst%
bcdedit /store %bcddrive%\Boot\BCD /set %bcdentry% detecthal yes
bcdedit /store %bcddrive%\Boot\BCD
:endbcd

endlocal