Re: trap 3e in OBP when booting from new disk
From: Stefaan A Eeckels (tengo_at_DELETEMEecc.lu)
Date: 02/16/05
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Date: Wed, 16 Feb 2005 20:25:15 +0100
On 16 Feb 2005 19:29:28 +0100
Konstantinos Agouros <elwood@agouros.de> wrote:
> I have an Ultra30 into which I built a second hard disk. When I try to
> boot from this disk I get a trap3e in OBP. However if I first du a
> probe-scsi and then boot it works.
>
> The disk is an IBM disk.
>
> Anyobody got a clue, what is causing this?
It's a known incompatibility between OBP and the
firmware in certain IBM disks.
To get the system into a state where it'll boot without
manual intervention, you'll need to install some user code
in the nvramrc.
If you can boot the system, you can load the nvramrc
through the "eeprom" command (/usr/platform/sun4u/sbin/eeprom)
as root:
# eeprom 'use-nvramrc?=true'
# eeprom 'nvramrc=probe-all install-console banner ? \
" Probe UltraSCSI controller to fix trap 3e error" type cr ? \
" /pci@1f,4000/scsi@1" " show-children" execute-device-method drop'
It can also be done through OBP's nvedit command:
STOP-A
ok nvedit
0: probe-all install-console banner
1: " Probe UltraSCSI controller to fix trap 3e error" type cr
2: " /pci@1f,4000/scsi@1" " show-children" execute-device-method
3: drop
4: ^C
ok nvrun
ok nvstore
ok setenv use-nvramrc? true
ok reset-all
The "nvrun" command executes what you've just keyed into the
temporary buffer, useful to test if it works OK.
"nvstore" saves the code to the nvram, and the "setenv"
command tells the system to execute the nvramrc contents on
booting.
Take care,
-- Stefaan -- As complexity rises, precise statements lose meaning, and meaningful statements lose precision. -- Lotfi Zadeh
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