AT&T 3B2 Maintenance Reference Manual page 325

Appendix C: Using 382 Computer Maintenance
Utilities
Introduction
The 3B2 computer Maintenance Utilities floppy diskette (included with this manual) contains
programs that are useful for troubleshooting a 3B2 that is unable to boot from a hard disk.
These programs are
filledt, dgmon,
and
idtools.
A short description of each program
follows. For more details, refer to the subsequent sections.
filledt
Similar to the
filledt
command that is installed on hard disk by the
Essential Utilities. Only hardware components essential to the boot process
will be recognized. Therefore, most feature cards such as
Eports
will show as
VOID in the edt after executing this command.
dgmon
The same as the
dgmon
command that is installed on hard disk by the
Essential Utilities. As with
filledt, dgmon
will only recognize critical
components such as the system board and SCSI host adapter.
idtools
Formerly known as
devtools. idtools
provides several tools for
:maintenance procedures on 3B2 Models 300/310/400 integral hard disks (ST-
506 interface). These tools will not work with SCSI disks or with ST-506 disks
connected to an expansion disk controller (XDC) feature card.
This appendix provides instructions for the use of these utilities. For detailed instructions on
the use of the diagnostic monitor (dgmon) refer to Appendix B, "Using the Diagnostic
Monitor."
NOTE: If the 3B2 computer Maintenance Utilities floppy diskette is not available, a bootable
diagnostic diskette can be created by following the procedures in Figure C-1. This example is
for a machine running UNIX System V Release 2.0.4. Note that
idtools
will not be
available.
Using 382 Computer Maintenance Utilities C-1