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AX = 440Dh CX = 086Bh / 486Bh (category code 08h for FAT12/16, 48h for FAT32; minor code 6Bh) BH = logical drive number (00h = default, 01h = A:, etc.)
Return:
CF set on error AX = error code (01h,02h,etc.) (see #01680 at AH=59h/BX=0000h) CF clear if successful
Desc: Lock all logical volumes on the same physical volume as the indicated drive
See Also: AX=440Dh"DOS 3.2+" - AX=440Dh/CX=084Bh - AX=440Dh/CX=086Ah
Category: DOS Kernel - Int 21h - M
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