"ESDHLPDD.sys is a simple interface physical device driver (PDD) that can perform reboot / power-off after system shutdown without any kernel / subsystem modification. A sample executable, ESD.exe, issues system shutdown with 3 modes (conventional / reboot / power-off) interactively (via Presentation Manager) or not (via command line option)."
Web Site:
http://www.sys3175.com/~jjsuwa/
Source: OS2.jp