Windows NT Subsystems and Associated Files

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The following information describes the files associated with eachsubsystem in Windows NT and the files associated with the virtualMS-DOS machine (VDM) and the Windows on Windows (WOW) environment.

WIN32 Subsystem

CSRSS.EXE    - Main component of Win32 subsystem.KERNEL32.DLL - *GDI32.DLL    - *USER32.DLL   - * * These files are 32-bit equivalents of the similarly-named Windows   files.

POSIX Subsystem

PSXSS.EXE    - Main component of POSIX subsystem.PSXDLL.DLL   - Handles communication between applications and               PSXSS.EXE.POSIX.EXE    - Handles communications between POSIX and the Windows NT               executive.

OS/2 Subsystem

OS2SS.EXE    - Main component of OS/2 subsystem.OS2DLL.DLL   - Handles communication between OS/2 application and               subsystem.OS2.EXE      - Passes name and command line parameters to OS2SVR.EXE.OS2SRV.EXE   - Component that starts the application for the subsystem.

MS-DOS Virtual DOS Machine (VDM)

NTIO.SYS     - The equivalent of IO.SYS on MS-DOS machines.NTDOS.SYS    - The equivalent of MSDOS.SYS.NTVDM.EXE    - Win32 Application.NTVDM.DLL    - Win32 Application.REDIR.EXE    - Virtual Device Driver (VDD) redirector for the VDM.

Window on Windows (WOW)

WOWEXEC.EXE  - Handles the loading of 16-bit Windows-based applications.WOW32.DLL    - Dynamic Link Library of the WOW application environment.NTVDM.EXE    - VDM Component.NTVDM.DLL    - VDM Component.NTIO.SYS     - VDM Component.REDIR.EXE    - VDM Component.VDMREDIR.DLL - Redirector for WOW environment.KRNL386.EXE  - Used by WOW on x86 based systems.KRNL286.EXE  - Used by WOW on non x86 based systems.GDI.EXE      - Modified version of Windows 3.10 GDI.EXE.USER.EXE     - Modified version of Windows 3.10 USER.EXE.

Article ID: 105992 - Last Review: 10/26/2013 01:22:00 - Revision: 3.0

  • Microsoft Windows NT Workstation 3.1
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