:: by bitbyte  http://plop.at
@echo off
if "%1"=="" goto help
partlist -d %1|find "primary"  > NUL
if errorlevel 1 goto no
echo primary partition found
goto end
:no
echo no primary partition found
goto end
:help
echo check if primary partition on the drive
echo.
echo parameter:  0 ...harddisk 1
echo             1 ...harddisk 2
echo.
echo example:  primary 0
:end