System UUID change

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1

Hi
Is there a way to change the system UUID ? As far as i know system uuid is extracted from biios , and veeam needs unique uuids. Unfortunately seems that a some motherboard manufacturers use the some uuid, and the result is that on 3 physical systems i have the same uuid ( to be able to link them to veema as immutable storages, different uuids are required .
If there is a way to change it, could somebody advise me, please ?
Thanks

2

@laca3400 Hi and welcome to the Forum :smile:
Are these virtual machines or bare-metal? It would seem not… https://forums.veeam.com/servers-workstations-f49/duplicate-uuids-t47813.html?ad=in-text-link It’s probably something you need to follow up with the veeam folks…

3

Hi Malcolm
The machines are physical machines, motherboard is Axiomtek, and Asus .
I`ve landed here after picking up the issue with Veeam. They suggested UUID change, and 3 motherboards later i said i need help …
Thanks,. best regards

4

@laca3400 What type of BIOS is on the machines egi AMI, Award etc? I suspect your going to have to do some low level DMI foo in the BIOS, or ask the Motherboard Manufacturers what tools they have to do this…

5

Hi Malcom
The second front opened, is at the motherboard manufacturer (Axiomtek), until i get a response from there, thought i give a try with changing the UUID from linux, maybe is possible .
Thanks, best reagrds

6

@laca3400:

Just to confirm and, for those readers who are wondering which UUID values are being addressed here –

  • Taking this machine as an example, if you do the following –
 # cat /sys/class/dmi/id/product_uuid 
723c0737-3112-5654-7963-04421a227103
 # 
 # dmidecode | grep UUID
        UUID: 723c0737-3112-5654-7963-04421a227103
 #

– are all the machines are displaying the same product UUID values?

7

hi
yes , using the dmidecode | grep UUID , the result is the same on the physical machines. Even tried to add a different NIC ,as UUID is generated based also on the NIC MAC address ( as far as i know ) but no change.
Tomorrow can add screenshot if needed .

Thanks, best regards

8

@laca3400:

Then, unfortunately, you are forced to use a BIOS/UEFI tool to change each and every Motherboard/Mainboard UUID value.

  • These tools are, AFAICS, only available from the BIOS/UEFI suppliers – AFAICS, there ain’t no universal tool …

Which is why, Malcom asked you to examine which BIOS/UEFI is present on the hardware you’re using.

9

Hi
Bios is AMI (American Megatrend) 2017 Aptio
Thanks, best regards

10

@laca3400 use at you own risk!!! https://www.ami.com/bios-uefi-utilities/

Edit: Google “AMI BIOS DMI tool” will give additional info…

11

Hi Malcolm
Thanks for the quick reply, will dig in
Best regards

12

What about Insyde for Lenovo laptops?