Int 13 Fn 0E - Hard Disk - Read Sector Buffer (xt Only) [B]
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 #0166)
Notes: transfers controller's sector buffer. No data is read from the drive
used for diagnostics only on PS/2 systems
See Also: AH=0Ah