INT 13,1 - Disk Status

AH = 01

on return:

AL = status:

% Status in AL

00 no error

01 bad command passed to driver

02 address mark not found or bad sector

03 diskette write protect error

04 sector not found

05 fixed disk reset failed

06 diskette changed or removed

07 bad fixed disk parameter table

08 DMA overrun

09 DMA access across 64k boundary

0A bad fixed disk sector flag

0B bad fixed disk cylinder

0C unsupported track/invalid media

0D invalid number of sectors on fixed disk format

0E fixed disk controlled data address mark detected

0F fixed disk DMA arbitration level out of range

10 ECC/CRC error on disk read

11 recoverable fixed disk data error, data fixed by ECC

20 controller error (NEC for floppies)

40 seek failure

80 time out, drive not ready

AA fixed disk drive not ready

BB fixed disk undefined error

CC fixed disk write fault on selected drive

E0 fixed disk status error/Error reg = 0

FF sense operation failed

- codes represent controller status after last disk operation

- returns the status byte located at 40:41 in the ~BIOS Data Area~