echo off
drive a
if errorlevel 129 goto retry
if errorlevel 128 goto nodkt
if errorlevel	2 echo Diskette has been inserted since drive last accessed.
if errorlevel	2 drive a
:retry
if errorlevel 129 goto erdkt
if errorlevel	1 goto wpdkt
echo Diskette is WRITE-ENABLED.
goto chgdrv
:wpdkt
echo Diskette is WRITE-PROTECTED.
:chgdrv
a:
vol
echo.
cd
goto endbat
:erdkt
echo Diskette has a serious error.
goto endbat
:nodkt
echo There is no diskette in the drive.
:endbat
echo.