Int 21 Fn 71AA  - Windows95 - Long Filename - Create Subst                 [D]

   AX = 71AAh
   BH = 00h
   BL = drive number (00h = default, 01h = A:, etc.)
   DS:DX -> ASCIZ pathname to associate with drive letter

Return: CF clear if successful
   CF set on error
       AX = error code (see #1366)
       7100h if function not supported

See Also: AX=71AAh/BH=01h,AX=71AAh/BH=02h,INT 2F/AX=1000h,#1329