Duplicate GUID (Full Version)

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xiano8494 -> Duplicate GUID (6/26/2008 9:38:18 AM)

I have posted this over at TechNet, so apologies if you have already seen this!

I am having a problem with OSD on account of the fact that 15 or so of my machines share a BIOS GUID (I can only assume that it was a bad BIOS flash before my time)  This causes all the machines to be detected as the same machine even though they all have unique MAC addresses.

So, the question is:
Is it possible to...?
a) Make SCCM ignore the GUIDs completely and work only based on MAC addresses?
b) Tell it to ignore the GUID in question, like it already does the GUID made up of all 0's and all F's
c) Somehow flash the BIOS so that it has a correct GUID or an all 0/F GUID
d) Do something else clever to make the stupid thing work!

Any help would be gratefully received!

Alex Davison
St Albans Catholic High School




chiners_68 -> RE: Duplicate GUID (6/26/2008 9:44:35 AM)

Slight off topic but are the PC's with duplicate GUID's Dells..?

if they are then there is a possiblility that the MB's have been replaced & the engineer hasnt run his tools to reset the GUID/serial information held in the BIOS.

Dell has a tool called Asset.exe you run against the service tag of the unit & it reconfigures the bios creating its unique GUID.

http://www.dellcommunity.com/supportforums/board/message?board.id=oplex_bios&message.id=8212

you want this post

quote:


We have run into this same problem.  We use RIS to reimage our PCs.  After much searching, I finally found the answer in a discussion group that is not on the Dell site.  On the Dell systems, apparently part of the information taken in order to determine the guid for a particular system is the asset tag (service tag #).  When you get a new system from Dell, this is set at the factory.  However, when you get a motherboard replacement, this information is the same on every motherboard.  The way you can change this is to download the Dell System Utilites vA14 for multiple OS/multiple systems, and get a utility off of that diskette called asset.com.  These particular utilities are dated 9/26/01, which is older than these systems, but this is what I was pointed to and they worked for me.  You need a bootable diskette with the asset.com utility on it.  Boot to that diskette, and run the command: asset /s nnnnnn where nnnnnn is the unique service tag number on your PC.  This will resolve the duplicate guid problem. I was unable to find this by searching for "duplicate guid" on the Dell support site, or by looking for downloads for my particular system.  I was only able to locate the answer using google to search the Internet.   The link for this download is: http://support.dell.com/support/downloads/format.aspx?releaseid=R21706&c=us&l=en&cs=&s=gen Some of the people at Dell techinical support will tell you that the technician that replaces your motherboard should run this (to give you a new motherboard in the same condition as the one you originally received from Dell), but the technicians have never heard of it and don't have the utility, at least at our location.




xiano8494 -> RE: Duplicate GUID (6/26/2008 9:48:01 AM)

They're not dells, they're Evesham's.
 
If I could find a similar tool to reset the GUIDs that would be perfect.




chiners_68 -> RE: Duplicate GUID (6/26/2008 11:24:56 AM)

try calling Evesham's & tell them they have duplicate GUID's & ask them why & how to resolve?
 




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