INT 13 - HARD DISK - READ SECTOR BUFFER (XT only)
AH = 0Eh
DL = drive number (80h = first, 81h = second hard disk)
ES:BX -> buffer
Return: CF set on error
CF clear if successful
AH = status code (see AH=01h)
Notes:  transfers controller's sector buffer.  No data is read from the drive
used for diagnostics only on PS/2 systems

See also: 130A

130E - HARD DISK - READ SECTOR BUFFER (XT only)