Int 13H [PC] [AT] [PS/2] Function 0DH (13) Reset fixed disk system

Resets the fixed disk controller, recalibrates attached drives (moves the read/write arm to cylinder 0), and prepares for subsequent disk I/O.

Call with:

AH = 0DH

DL = drive

80H—FFH fixed disk

Returns:

If function successful

Carry flag = clear

AH = 00H

If function unsuccessful

Carry flag = set

AH = status (see Int 13H Function 01H)

Note:

This function is supported on fixed disks only. It differs from Int 13H Function 00H in that the floppy disk controller is not reset.