set TRUECRYPT=D:\TrueCrypt\TrueCrypt\TrueCrypt.exe
set CONTAINER=D:\TrueCrypt\Container\Container1
set LETTER=E:
if not exist "%TRUECRYPT%" (
  echo "%TRUECRYPT%" doesn't exist
  pause
)else if exist %LETTER% (
  echo %LETTER% is already in use
  pause
) else if not exist "%CONTAINER%" (
  echo "%CONTAINER%" doesn't exist
  pause
) else if exist "%CONTAINER%" (
  "%TRUECRYPT%" "%CONTAINER%" /l %LETTER% /a /q
)


# "D:\TrueCrypt\TrueCrypt\TrueCrypt.exe" "D:\TrueCrypt\Container\Container1" /l E: /a /q