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AH = 0Bh AL = number of sectors (01h may be only value supported) CH = low eight bits of cylinder number CL = sector number (bits 5-0) high two bits of cylinder number (bits 7-6) DH = head number DL = drive number (80h = first, 81h = second) ES:BX -> data buffer
Return:
CF clear if successful CF set on error AH = status (see #00234) AL = number of sectors transferred
Notes: Each sector's worth of data must be followed by four to seven bytes of error-correction information. Used for diagnostics only on PS/2 systems; IBM officially classifies this function as optional
See Also: AH=03h - AH=0Ah - MEM 0040h:0074h
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