en:docs:dos:api:int21:44:0e

Note: This API call is for DOS personality only. Use Family API for portability.

2018/09/07 07:04 · prokushev

Int 21H, AH=44H, AL=0EH

Version

3.2 and higher

Brief

GET LOGICAL DRIVE MAP

Family API

Input

AX = 440Eh
BL = drive number (00h=default,01h=A:,etc)

Return

CF set on error

    AX = error code (01h,0Fh) (see #01680 at AH=59h/BX=0000h)
CF clear if successful
    AL = 00h block device has only one logical drive assigned
	 1..26 the last letter used to reference the drive (1=A:,etc)

Macro

Notes

DR DOS 3.41-5.0 DRIVER.SYS does not support drive mapping and thus

  always returns AL=00h; Windows NT 4.0 also always returns AL=00h
in addition to the normal operation, if Stacker is installed, this
  call also sets the volume number at offset 58h in the Stacker
  device driver (DR DOS 3.41-5.0 only; use AX=4408h otherwise)
  (see AX=4404h"Stacker",INT 25/AX=CDCDh)

See also

  AX=4408h,AX=440Fh,INT 2F/AX=122Bh

Note


en/docs/dos/api/int21/44/0e.txt · Last modified: 2021/05/01 17:11 by prokushev