Sun-Managers came thru again. Thanks to all who responded to my cry for
suggestions regarding the ST41200n from Seagate.
martin@stavanger.Geco-Prakla.slb.com (Martin Oksnevad) had the winning
answer. I tried solution number 2 and it worked fine. Thanks Martin.
Thanks to the following who responded..
Roger Spaulding <ras@loveland.ramtron.com>
Bill Morrow <morrow@cns.ucalgary.ca>
don@mars.mars.dgrc.doc.ca (Donald McLachlan)
sunrise!don@rambone.psi.net (Don Lenamond)
And any others that I forgot to mention.
Here is Martins suggestions..
The Seagate ST41200N a.k.a. Wren-7 is famous for this problem when
used as system disk on Sun sun4c (and sun4m ?) machines like the SS2.
Solution 1:
Don't use the first 2 cylinders on the disk, which means partition a
(root partition) should start on cylinder 2 and not cylinder 0.
Solution 2 from "Sun-Managers' Frequently Asked Questions" :
Note: Older Wren 7's may not boot on IPX's, ELC's and later machines,
due to a bug in the Wren 7's firmware. Here is a patch to the NVRAM
which must be made from the monitor.
WARNING : It is important that you type this correctly. Check this
several times! Remember all the question marks, dashes and spaces
and yes, sstart should be with two "s"'s. Note: Syntax errors in
your NVRAMRC can make your machine unbootable. In Prom version
2.x, hitting L1-N after the selftest at bootup will reset the NVRAM.
If you have prom revision 2.0 to 2.5, inclusive:
(from monitor level)
> n
ok nvedit
0: true to fcode-debug?
1: probe-all install-console banner
2: cd /sd [ or whatever drive you want to boot from ]
3: patch 0 1 sstart
4: device-end
5: [ press <control> c to exit nvedit at this point ]
ok nvstore
ok setenv use-nvramrc? true
ok reset
For prom revision 2.6 or greater, use:
(from monitor level)
> n
ok nvedit
0: probe-all install-console banner
1: cd /esp
2: ' 0 ' 1 ' timed-spin >body 7 /token * + token@ (patch
3: device-end
4: [ press <control> c to exit nvedit at this point ]
ok nvstore
ok setenv use-nvramrc? true
ok reset
If you have a prom revision earlier than 2.0, or you don't wish
to use the nvramrc, a Wren VII can be made to boot by making
the "a" partition start at cylinder two, instead of cylinder zero.
This archive was generated by hypermail 2.1.2 : Fri Sep 28 2001 - 23:10:15 CDT