Int 13h, 09h            Initialize Fixed Disk Tables               fixed disk

    Initializes a fixed disk using parameter tables.

        Entry   AH = 09h
                DL = Drive number (Bit 7 must be set)

        Return  AH = Status of operation (see Service 01h)
                CF   Set if error; otherwise cleared

    Int 41h points to a fixed disk parameter table. On some machines,
    Int 46h also contains a fixed disk parameter table for a second
    drive. These tables are used by this service to initialize drives.
    Service 09h will cause the the BIOS to adjust properly to any
    fixed disk parameters that have been changed in the fixed disk
    parameter table.


    Note
    The behavior of this service depends on the type of machine it is
    executed on:


    XT                If the drive number is a legal value (80h <= DL
                      <= 87h), then both drives 0 and 1 are
                      initialized. Int 41h actually points to four
                      tables. The table used for the drive number is
                      determined by the setting of switches on the
                      fixed disk drive adapter. If the initialization
                      of drive 0 fails, drive 1 initialization is not
                      attempted.

    AT and XT-286     If DL is 80h, then drive 0 is initialized via
                      Int 41h. If DL is 81h, then drive 1 is
                      initialized via Int 46h.

    If an error is encountered, use Service 0h to reset the drive and
    retry the operation.

    For the AT, XT-286, and PC Convertible, the BIOS executes Int 15h,
    Service 90h (Device Busy), for the diskette (Type = 01h) and the
    fixed disk (Type = 00h) prior to waiting for the interrupt. Int
    15h, Service 91h (Interrupt Complete), is executed upon
    completion.