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September 2007

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Sender:
Mailling list for Scientific Linux users worldwide <[log in to unmask]>
Date:
Tue, 25 Sep 2007 13:56:33 +0200
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Honest Guvnor <[log in to unmask]>
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Subject:
Changing BIOS settings on nodes
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Honest Guvnor <[log in to unmask]>
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To: scientific-linux-users <[log in to unmask]>
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Greetings.

We would like to change the BIOS settings on our headless compute
nodes to enable PXE booting which is disabled in the default
configuration. Reading and writing with /dev/nvram appears to work but
on reboot the change in CMOS is recognised, assumed to be a corruption
(it might be a corruption if /dev/nvram is not properly supported) and
prompts to be reset. Is there a way round this?

There is no support for a serial console in the BIOS. The nodes have a
floppy disk. Any thoughts on alternatives?

Thanks - Andy.

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