User`s manual

F
F-1
FDisk Status Codes
Introduction
The status word returned by the disk system call routine flags an
error condition if it is nonzero. The most significant byte of the
status word reflects controller independent errors, and they are
generated by the disk trap routines. The least significant byte
reflects controller dependent errors, and they are generated by the
controller. The status word is shown below:
Because of the nature of the SCSI and IDE/EIDE Host Adapters,
additional status may be returned. The format of the additional
error status is as follows:
SCSI
The SCSI command is a byte that identifies the command that was
issued in which the Sense Key was returned. The Sense Key is a byte
that is returned in Request Sense Data buffer (byte number two).
Refer to the ANSI X3T9.2 SCSI Specification.
15 8 7 0
Controller-Independent Controller-Dependent
15 8 7 0
SCSI Command Sense Key