On NT-based Windows, PID 0 is "System Idle Process" and is quite similar in function to the Linux one. On DOS-based Windows, IIRC there is no such thing as PID

On NT-based Windows, PID 0 is "System Idle Process" and is quite similar in function to the Linux one. On DOS-based Windows, IIRC there is no such thing as PID 0 since PIDs there are actually kernel memory pointers and thus very high: http://www.thescarms.com/VBImages/RunningProcs.gif http://www.thescarms.com/VBImages/RunningProcs.gif -- instead, the idle loop is inside VMM32.