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Microsoft KB Archive/102058

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Knowledge Base

Some MS-DOS API Functions Not Supported With Windows NT

Article ID: 102058

Article Last Modified on 11/1/2006


  • Microsoft Windows NT Advanced Server 3.1
  • Microsoft Windows NT Workstation 3.1

This article was previously published under Q102058


The following MS-DOS application program interface (API) functions are not supported with Windows NT:

 - INT21H/44h IOCTL subfunction 05,0dh
 - INT 21H function 52h (undocumented) - offset 12H (pointer to DISK
   buffer information) is NULL in Windows NT DOS (for this reason
   INTERLNK.EXE from MS-DOS 6 doesn't work in Windows NT).
 - INT21H/53h SetDPB
 - INT13H all subfunctions for hard disks
 - INT13H following subfunctions for floppy disk drives:
      09-14h, 19h-1ah
 - INT15H:
 - INT18H (basic)
 - INT2F following subfunctions
 - INT33 (mouse)
      Ax=10h, Ax=27h-40h.
 - INT67 (EMM) AH=DEh (all subfunctions, VCPI)
 - task switcher APIs

Additional query words: prodnt

Keywords: kb3rdparty kbinterop KB102058