Source code for bootdisk.bat

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@ECHO OFF
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ECHO.
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```

:: Check Windows version (XP Pro or later) and command line arguments (none)

IF NOT "%OS%"=="Windows_NT"    GOTO Syntax

IF NOT "%~1"==""               GOTO Syntax

WMIC.EXE Alias /? >NUL 2>&1 || GOTO Syntax

```
 
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:: Retrieve drive info
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FOR /F "tokens=1* delims==" %%A IN ('WMIC Path Win32_DiskPartition Where "BootPartition=true And PrimaryPartition=true" Get DeviceID /Format:list') DO IF NOT "%%~B"=="" SET BootPartition=%%B

FOR /F "tokens=1 delims=[]" %%A IN ('WMIC Path Win32_LogicalDiskToPartition Get Antecedent^,Dependent /Format:list ^| FIND /N "=" ^| FIND /I "%BootPartition%"') DO SET LineNum=%%A

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SET /A LineNum+=1
```

FOR /F "tokens=3 delims=="  %%A IN ('WMIC Path Win32_LogicalDiskToPartition Get Antecedent^,Dependent /Format:list ^| FIND /N "=" ^| FINDSTR /B /L /C:"\[%LineNum%\]"') DO SET BootDrive=%%~A

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:: Format output
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FOR /F "tokens=1,2 delims=," %%A IN ("%BootPartition%") DO (

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	SET BootDisk=%%A
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	SET BootPartition=%%B
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)
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SET BootPartition=%BootPartition:~1%
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SET BootDrive=%BootDrive:"=%
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:: Display the results:
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SET Boot
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:: Done
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GOTO:EOF
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:Syntax
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ECHO BootDisk.bat, Version 1.01 for Windows XP Pro and later

ECHO Displays boot disk, partition and drive letter.

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ECHO.
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ECHO Usage:  BOOTDISK
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ECHO.
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ECHO Notes:  The results are displayed on screen and stored in environment

ECHO         variables named BootDisk, BootDrive and BootPartition.

ECHO         This batch file uses WMIC, which is native in Windows XP

ECHO         Professional and all later Windows versions.

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ECHO.
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ECHO Written by Rob van der Woude
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ECHO http://www.robvanderwoude.com
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ECHO.
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:: Set errorlevel 1 in Windows NT 4 and later versions

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IF "%OS%"=="Windows_NT" COLOR 00
```
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