Expects: AH    01H
DL    drive: 00H thru 03H for diskette drives
80H or 81H for hard disk controller
Returns: AH    BIOS disk error code of most recent operation (0=no error)
(this error code is also at 0040:0041).
Info: Obtains the error/status code of the most recent disk I/O

- -

INT 13H 01H: Query Disk Error Status