en:docs:dos:api:int21:44:08

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=08H

Version

3.0 and higher

Brief

CHECK IF BLOCK DEVICE REMOVABLE

Family API

Input

AX = 4408h
BL = drive number (00h = default, 01h = A:, etc)

Return

CF clear if successful

    AX = media type (0000h removable, 0001h fixed)
CF set on error
    AX = error code (01h,0Fh) (see #01680 at AH=59h/BX=0000h)

Macro

Notes

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 (except under DR DOS 3.41-5.0, which do not pass
  through this call to the driver; use AX=440Eh instead)
  (see AX=4404h"Stacker",AX=440Eh,INT 25/AX=CDCDh)
this function was not supported by Digital Research's DOS Plus

See also

AX=4400h,AX=4404h"Stacker",AX=4409h,INT 2F/AX=122Bh

Note


en/docs/dos/api/int21/44/08.txt · Last modified: 2021/05/01 14:53 by prokushev