@echo off  
echo 批处理初始工作目录为%cd%,开始切换...  
for /f "tokens=3 delims==" %%i in ('Wmic Path Win32_LogicalDiskToPartition^|find /i "Disk #0"') do call :check %%i  
echo.  
cd /d %B%  
echo 工作目录已切换至%cd%,任意键退出...  
pause>nul  
exit  
 
:check  
if not defined A set A=%~1  
set B=%~1