Identifying the problem
If the system hangs mysteriously, either at boot time,
during installation, or shortly thereafter, use these steps to
isolate and identify the problem:
-
Confirm that your hardware is listed as supported in the
SCO Compatible Hardware Web Pages.
If it is not, contact the hardware vendor to get the requisite
software or replace the hardware with a supported device.
-
If possible, check a suspected component on another UnixWare 7 system
with a similar configuration.
-
If any third-party drivers are installed, such as those supplied
with multiport adapters, remove both the driver and the hardware that
it controls, relink the kernel, and see if the problem persists.
-
Make certain that your devices are recognized at boot time.
Watch the boot display, use
cat(1)
or
vi(1)
to examine log files in the /var/adm directory, or use the
``Using the Device Configuration Utility (DCU)''.
-
Check for hardware conflicts between components, including
interrupt vectors,
DMA channels,
and
memory addresses.
Check for documented incompatibilities or limitations
in the Getting Started Guide and the
SCO Compatible Hardware Web Pages.
-
If your machine has features such as shadow RAM or
memory caching, disable them.
-
Known conflicts exist between video adapters and network adapters.
Sometimes, attempts to send or receive data from the network
adapter are blocked.
To solve this problem, avoid using IRQ 2 (interrupt vector 2)
for your network adapter.
Some graphics adapters use the additional interrupt, causing the conflict to occur.
Check the
SCO Compatible Hardware Web Pages
for warnings that apply
to specific adapters and adapter combinations.
Most video adapters that use IRQ 2 have a jumper to disable
this behavior.
-
Known conflicts exist between the default RAM buffer base
address for the wdn driver
for the Western Digital WD8003 and WD8013 networking adapters,
and certain motherboards and VGA video adapters.
The wdn driver uses the RAM buffer base address,
D0000, as a ROM address.
This conflicts with motherboards that store CMOS information
at this address and with VGA adapters that use D0000
as a ROM address.
To solve this problem, reconfigure your Western Digital
WD8003 or WD8013
networking hardware to use CC000 or C0000 as the
RAM buffer base address.
Then, reconfigure the wdn driver using the instructions in
``Driver configuration''.
-
If you installed DOS on your hard disk, you may have a partition
table that UnixWare 7 system software does not recognize.
You must use DOS version 6.2 or earlier.
The DOS partition must
not have been created with Disk Manager.
© 2004 The SCO Group, Inc. All rights reserved.
UnixWare 7 Release 7.1.4 - 22 April 2004