0:474h                   Last Fixed Disk Operation Status

Length: 1 byte

Holds the status of the last fixed disk operation.

                Value           Last Fixed Disk Operation

00h            No error

01h            Invalid command

02h            Address mark not found

03h            Attempt to write on write-protected disk

04h            Sector not found

05h            Reset failed

07h            Drive parameter activity failed

08h            DMA overrun

09h            Attempt to DMA across a 64K boundary

0Ah            Bad sector flag detected

0Bh            Bad cylinder found

0Dh            Invalid number sectors on format

0Eh            Control data address mark detected

0Fh            DMA arbitration level out of range

10h            ECC data error

11h            ECC corrected data error

20h            Controller failure

40h            Seek failure

80h            Time out

AAh            Drive not ready

BBh            Undefined error

CCh            Write fault

E0h            Status error

FFh            Sense operation failed

Note:          Use INT 13h, Service 01h, to obtain this

information.

Prev:     0:472h Reset State Flag

See also: INT 13h, 01h

Next:     0:475h Number of Fixed Disks