john.hearns at streamline-computing.com
Mon Aug 13 01:05:58 PDT 2007
Beat Rubischon wrote:
> It's probably the safest way to organize some students, give them a
> keyboard, a monitor and a memoy stick containing the flash files...
Having been involved in this exercise several times, ie. updating and
subequently resetting BIOS settings on large clusters, I agree with Beat.
The only reliable way to do it is with several people, monitors and USB
floppies or memory sticks.
The problem (as you all know) isn't updating the BIOS, which can be done
easily by PXE booting a DOS floppy image. It is the BIOS settings which
are left afterwards - and I'm sepaking as someone who has tried
capturing /dev/nvram settings and pushing them out to the updated nodes,
which doesn't necessarily work.
I would advise the original poster to read up on /dev/nvram - capture
the /dev/nvram of a 'good' node in a file. Update a node via PXE, then
when it is rebooted into Linux use cat goodfile > /dev/nvram
A forlorn hope really.
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