restet nvram

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2 total messages Started by Pierre-Philipp Braun Wed, 10 Aug 2011 11:29

#99

Author: Pierre-Philipp Braun
Date: Wed, 10 Aug 2011 11:29

16 lines
1964 bytes

Hi,

I'm dealing with an alphaserver 800 5/500 and I'm wondering how to 
entirely reset the nvram.  I've got the latest firmware (V5.8).

On microvaxes there's the 'unjam' command to reset the firmware to 
default values.  On this alpha there's no such command.  And the 
commands are generally different.  E.g. boot -flags x.x instead of 
boot/x.  Any idea how to reset the whole thing to the defaults on alpha?

I think I can reset some single values to the defaults using 'set 
<envar>' with no arguments (previously set -defaults <envar>, this is 
now obsolete).  But I would like to reset it all.

Thanks,
Pierre-Philipp

Re: restet nvram

#100

Author: Johnny Billquist
Date: Wed, 10 Aug 2011 12:39

27 lines
2864 bytes

On 2011-08-10 13.29, Pierre-Philipp Braun wrote:
> Hi,
>
> I'm dealing with an alphaserver 800 5/500 and I'm wondering how to
> entirely reset the nvram. I've got the latest firmware (V5.8).
>
> On microvaxes there's the 'unjam' command to reset the firmware to
> default values. On this alpha there's no such command. And the commands
> are generally different. E.g. boot -flags x.x instead of boot/x. Any
> idea how to reset the whole thing to the defaults on alpha?
>
> I think I can reset some single values to the defaults using 'set
> <envar>' with no arguments (previously set -defaults <envar>, this is
> now obsolete). But I would like to reset it all.

FYI: The unjam command on the VAX does not affect nvram. It's to unjam 
bus adapters from potentially locked state (and possibly CPU and other 
hardware). I think it might even be a NOP on VAXstations. The command 
set of the VAX boot monitor is standardized, and so, some command might 
not make sense on some hardware platforms, but they still exist.

Normally, the nvram is reset by removing or adding a jumper, shorting 
two pins on the motherboard, or something similar. Sometimes there is a 
button you can press to reset nvram. In all cases that I can remember, 
it's been something that required physical action on the machine.

	Johnny

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