SUMMARY: Unable to read boot error message

From: Ken McKinlay (kmckinla@kan.lmcda.lmco.com)
Date: Mon Mar 30 1998 - 16:33:48 CST


I have been remiss in posting the summary for this message but I had problems
with my mail system....

Solution:
 The solution that worked for me is attaching a system to serial port A via a
null modem. Below is the solution and other possible avenues that may be used
depending on the circumstances:

----------------------------------
rpae@jgbdev.fi.gs.com (Emy Parparita):
disconnect the keyboard from the ultra and use a dumb terminal connected to
serial port `a' (9600 bauds, 8bits, no parity) and press the hold key or ctrl/s
to stop the display at any point. even better you can use a pc (windos,
terminal app in no modem mode, 9600 bauds, 7 bits, space parity) or a serial
cable from the serial port `b' of a nearby sun, running `tip -9600 /dev/ttyb'
in a xterm. the last two solutions offer you a scrolling window so you can
trace back the messages.

the cables:

pc sun, port a
female 9p male 25p
2 ------------ 2
3 ------------ 3
5 ------------ 7

sun, port b sun, port a
male 25p male 25p
2 ------------ 3
3 ------------ 2
7 ------------ 7

see also `man tip'.
--------------------------------
Erwin Fritz <efritz@glja.com>:
What I do to counter this problem is to boot to single user and then manually
execute each of the scripts, in order, in the /etc/rc*.d directories.

--------------------------------
"Arora, Samir" <sarora@eldec.com>:
You can try connecting a vt100 terminal Or PC running terminal emulation
program on the serial port of your system and view the error message
That will help in debugging as well

--------------------------------
Mariel Feder <mfeder@central.meralco.com.ph>:
Have you tried the STOP-A keys combination, to stop the process
and see the messages?

--------------------------------
bismark@alta.Jpl.Nasa.Gov (Bismark Espinoza):
Look at the files /usr/adm/mess?* .

--------------------------------

Many thanks also to:
venkat d <venki21@hotmail.com>
Val <vpopa@dss.mc.xerox.com>
Dan Hubbard <dhubbard@thepalace.com>
Ronald Loftin <reloftin@mailbox.syr.edu>
Thomas Wong <twong@ipsg.mot.com>
David Wolfskill <david@xtend.net>
foster@bial1.ucsd.edu
"Eric R. Dodson" <eric@iqsc.com>

Original Message:
> I am having a problem with an Ultra-2 that is constantly rebooting on
startup.
> Unfortunately, on each reboot, the screen is cleared and the error is lost (my
> reading speed is not as fast as an Ultra!). Is there any way to stop this
> rebooting so that I can record the error message and find the real cause of
the
> problem ?



This archive was generated by hypermail 2.1.2 : Fri Sep 28 2001 - 23:12:35 CDT