Int 2F/AX=121Ah

AX = 121Ah
DS:SI -> filename

Return:
AL = drive (0 = default, 1 = A:, etc, FFh = invalid).
DS:SI -> filename without leading X:
(if present)

See Also: INT 21/AH=19h - INT 21/AH=60h

Category: DOS Kernel - Int 2Fh - D