利用WMIC判断非空CDROM盘符
@echo off
for /f "tokens=3* delims=," %%i in ('WMIC Path Win32_LogicalDisk Get DeviceID^,FileSystem^,Description /format:csv^|find /i "CD-ROM"^|find "CDFS"') do echo %%i
pause
全部CDROM盘符
@echo off
for /f "tokens=3* delims=," %%i in ('WMIC Path Win32_LogicalDisk Get DeviceID^,FileSystem^,Description /format:csv^|find /i "CD-ROM"') do call set CDROM=%%CDROM%% %%i
echo %CDROM:~1%
pause