serial numbers on new motherboards

Martin Langhoff martin.langhoff at
Mon Oct 17 10:53:33 EDT 2011

Hi Sridhar!

I didn't know you were getting bare motherboards. Reuben should have
some scripts and recommendations as to how to handle the situation.

You'll want to have the right mfg data -- serial number, UUID, KL, KA,
KV, LO -- for things to work correctly. Otherwise quite a few things
will be not-quite-right in fun and surprising ways.



On Mon, Oct 17, 2011 at 1:47 AM, Sridhar Dhanapalan
<sridhar at> wrote:
> I'm wondering what is the recommended process for changing an XO
> motherboard. The hardware side is relatively straightforward. However,
> new motherboards come with blank serial numbers.
> What is the impact of leaving the SN# in the mfg-data blank? My
> understanding is that parts of the XO OS first-boot setup and
> interactions with an XS are derived from the serial number.
> We have devised a method (using an olpc.fth script) to write the
> serial number of the XO chassis to the mfg-data on the board. What is
> the method used in other deployments?
> Thanks,
> Sridhar
> Sridhar Dhanapalan
> Engineering Manager
> One Laptop per Child Australia
> M: +61 425 239 701
> E: sridhar at
> A: G.P.O. Box 731
>      Sydney, NSW 2001
> W:
> _______________________________________________
> Devel mailing list
> Devel at

 martin.langhoff at
 martin at -- Software Architect - OLPC
 - ask interesting questions
 - don't get distracted with shiny stuff  - working code first

More information about the Devel mailing list