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September 2007

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Sender:
Mailling list for Scientific Linux users worldwide <[log in to unmask]>
Date:
Wed, 26 Sep 2007 09:51:56 +0200
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Reply-To:
Honest Guvnor <[log in to unmask]>
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Subject:
Re: Changing BIOS settings on nodes
From:
Honest Guvnor <[log in to unmask]>
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To: John Summerfield <[log in to unmask]>, scientific-linux-users <[log in to unmask]>
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On 9/25/07, John Summerfield <[log in to unmask]> wrote:

> these are all exactly the same model & revision? Same BIOS version?

Yes.

> Does dumping NVRAM and restoring it not work?

Yes it works in that the node cleanly reboots afterwards.
Unfortunately, if any of the settings are changed in order to enable
PXE booting the reboot fails because of a checksum test against the
checksum of the previous BIOS settings. I think I need to find a way
to disable the checksum, get at the checksum to replace it or persuade
it to boot with "corrupted" BIOS settings.

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