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AH = 91h CX = FFFFh (for partitions > 32 Mb) DS:BX -> request block (see #04094) CX = sector count (for partitions < 32 Mb) DX = starting sector number DS:BX -> buffer
Return:
CF set on error AX error code CF clear on success
Note: This function is supported by Paragon Technology Systems S/DOS 1.0 (and most probably by PTS-DOS 6.51, maybe even earlier).. To access big partitions (> 32 Mb), CX != FFFFh is not allowed and the buffer must always be used. Otherwise, the system will return error code 0207h.. It is currently unknown if this function is also supported by PhysTechSoft PTS-DOS 6.60, 6.70, or 2000.
See Also: INT 21/Ah=90h"PTS" - INT 25h - INT 26h
Category: Uncatagorized - Int 21h - P
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