[1498] in Release_7.7_team
Making Ultras stop trying to boot disk b.
daemon@ATHENA.MIT.EDU (Bill Cattey)
Thu Sep 17 13:45:28 1998
Date: Thu, 17 Sep 1998 13:45:23 -0400 (EDT)
From: Bill Cattey <wdc@MIT.EDU>
To: release-team@MIT.EDU
Cc: cluster-services@MIT.EDU, nschmidt@MIT.EDU, cfyi@MIT.EDU, jhawk@MIT.EDU,
bugs@MIT.EDU
There have been reports from the field of new Ultras trying to boot from
a nonexistant disk b. This note tells the story of why it is happening,
and the definitive answer to making it stop.
THE ANSWER:
after performing a PROM upgrade
with one of our bugfix PROM CD's type:
set-defaults
at the 'ok' prompt.
THE PROBLEM:
Since our magical bugfix PROM CD's came from engineers at Sun, rather
than from the normal production channels, the NVRAM settings in the PROM
image were not vanilla ones. Apparently, they were the ones for the
machine that cut the PROM image.
What happens is that the PROM flash procedure tries to impose on the
NVRAM the contents of the new image as best it can. On Ultra 10's this
means that the default boot device gets changed.
Cluster Services has been informed to add the
set-defaults
command to the PROM bugfix upgrade procedure, so we should no longer be
seeing this problem.
-wdc
