[SunHELP] cant boot sparc5

[Chris Barnes]

man you are a hero! it worked! all except for the setenv diag-mode? false
I've rebooted with the terminal connected and it has passed the 8.1.1 test
but your rights its trying to boot from the network...stop A should stop it
from trying to boot the network shouldn't it?

-----Original Message-----
From: Jeremy RJ Towers [mailto:jeremy.towers at btopenworld.com]
Sent: Tuesday, 21 May 2002 12:16 AM
To: Chris Barnes
Subject: Re: [SunHELP] cant boot sparc5


turn off the power and plug in your Sun keyboard. Then press stop and N
whilst powering on the system, and hold the keys down till you see the
keyboard lights stable.

This will reset the PROM to default values.

remember to

setenv diag-mode?  false

otherwise it will try to boot from the network.


Power off, disconnect your keyboard and reconnect the terminal to serial
port A.  You should see output on power up.

Setting the baud rate in the PROM is generally a bad thing from the
point of view of serviceabbility. At the least you should also set the
baudrate for the console in the OS to the same rate.

from http://sunsolve.sun.com/handbook_pub/General/OBP.html

Power On Commands

STOP bypasses POST. STOP-A aborts POST. STOP-D forces a diagnostic power
on. The NVRAM Parameter diag-switch? is set to true. STOP-F forces input
and output to ttya. Input from the Keyboard is disabled except for L1-A.
STOP-N forces a set-defaults of the NVRAM.


HTH

Jeremy

Chris Barnes wrote:

> hi people, I think i made a big mistake...i set the baud rate for ttya to
> 115200 on the prom. now i'm having trouble booting it. At first there was
> nothing comming up in the terminal from the sun machine, now i am getting
> info that looks like checks but the systems keeps stopping at a certain
> check:
> 8.1.1	dma	apc		bypass			Pass
>
> absolutly nothing else comes up after that...earlier in the checks it says
> "SPARCstation 5, Keyboard found" but i dont have a keyboard plugged in.
> If i plug a keyboard in and boot, nothing comes up on the terminal at all
so
> i'm guessing it detected the keyboard and it sending everythign to the
> screen...that would be good if i had a monitor that worked with it.
>
> anyway, would the solution be as simple as placing a jumper over 2 system
> board pins to reset the prom to factory defaults or cant this be done? if
it
> can be done, where do i find the pins to jump coz there's a few on the
board
> and i dont wanna jump the wrong ones.
> ..or is this problem even worse than i thought?
>
> any help appreciated! thanks very much
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