is the serial number on the motherboard unique

Corey Edwards tensai at
Wed May 13 19:15:34 MDT 2009

On Wed, 2009-05-13 at 16:16 -0600, Shane Hathaway wrote:
> jessie at wrote:
> >> Hash: SHA1
> >>
> >> Merrill Oveson wrote:
> >>> Then I thought all computers must have a motherboard - so why not use
> >>> the
> >>> serial number from it?
> >>>
> >>> Good idea, or is there something better?
> > 
> > Yes, that would work good. And the MAC address can easily be changed.
> > Something like "ifconfig eth0 hw net 00:34:E3:F1:A0".
> >> How about using:
> >> dmidecode -s system-uuid
> Keep in mind that some motherboards refuse to be reduced to a mere 
> number. :-)  I have a Tyan board that gives this number:

Some refuse to give a number at all, such as this old HP server I've
got. My newer Dell laptop is actually kind enough to report the service
tag for the system-serial-number. I can think of one specific time that
would have really helped a few years ago. The Dell tag was conveniently
located on a server just under a rail. Had to half-way dismantle it, all
without dropping service of course.


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