Int 21/AX=71AAh/BH=00h

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Windows95 - LONG FILENAME - CREATE SUBST

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 #01680) 7100h if function not supported

See Also: AX=71AAh/BH=01h - AX=71AAh/BH=02h - INT 2F/AX=1000h - #01643

Category: DOS Kernel - Int 21h - W

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