DOCUMENT:Q102058  02-AUG-1993  [W_NT]
TITLE   :Some MS-DOS API Functions Not Supported With Windows NT
PRODUCT :Windows NT
PROD/VER:3.10
OPER/SYS:WINDOWS
KEYWORDS:

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The information in this article applies to:
 
 - Microsoft Windows NT operating system, version 3.1
 - Microsoft Windows NT Advanced Server, version 3.1
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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:
      0-3,0fh,21h,23h,80h-82h,84h,85h,89h,90h,91h,c1h,c2h,c3h,c4h
 - INT18H (basic)
 - INT2F following subfunctions
      AX=
      0101h,4b01h,4b02h,4b03h,4b04h,1502,1503,1504,1505,1508,150e,150f
 - INT33 (mouse)
      Ax=10h, Ax=27h-40h.
 - INT67 (EMM) AH=DEh (all subfunctions, VCPI)
 - task switcher APIs
 
Additional reference words: 3.10
KBCategory:
KBSubCategory: winnt mdos

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