Having trouble with MSDOS program ? Tips on troubleshooting.

[ben2ong2]

I read a good article on Troubleshooting MS-DOS-Based Programs in Windows (Q314106) at Microsoft knowledgebase website. One of the first thing to test when you are having problems with MS-DOS-based programs is the Windows Virtual DOS Machine (NTVDM) subsystem. Open START-RUN and enter You are not allowed to view links. Register or Login or cmd.exe. If you don't see a MSDOS windows coming up you of course have a problem. Check the Config.nt and Autoexec.nt files in the SystemRoot%\System32 folder for nonstandard settings. Use a REM statement to remark out all entries except the following default entries: Config.nt---------dos=high, umbdevice=%SystemRoot%\System32\Himem.sysfiles=20Autoexec.nt-----------lh %SystemRoot%\System32\Mscdexnt.exelh %SystemRoot%\System32\Redirlh %SystemRoot%\System32\Dosxlh %SystemRoot%\System32\Nw16 (only if CSNW is installed)lh %SystemRoot%\System32\Vwipxspx (only if CSNW is installed)The registry entries that are associated with the NTVDM subsystem are: HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\Session Manager\Environment This key stores the environment variables from the Config.sys and Autoexec.bat files for use in Windows. HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\ VirtualDeviceDrivers This key stores the device drivers that are used in an NTVDM session. Windows Setup creates these entries when a device driver is installed.