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How can I get PC's GUID

Posted on 2001-09-11
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Last Modified: 2012-06-27
How can I get PC's GUID? With what software can I do it?

What is the GUID have relationship to?
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Question by:Richard_Reynolds
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25 Comments
 
LVL 16

Expert Comment

by:GUEEN
ID: 6473525
The GUID (Globally unique identifier) should uniquely identify your computer - it is like a fingerprint that an identifies individual - useful for machine ID's.

GUID links:
http://www.guid.org/
http://www.desertware.com/vbuniverse/createguid.html
http://www.junkbusters.com/microsoft.html#history
http://grc.com/downloaders.htm
http://www.skylarkutilities.com/download.pcs?make-guid






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Author Comment

by:Richard_Reynolds
ID: 6473623
Can you tell me what software can I use to read the PC's GUID when the machine without any os?
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LVL 16

Expert Comment

by:GUEEN
ID: 6473683
Huh?
You want software to run on a machine with no OS???
I don't think so!
GUID is mainly an alphanumeric identifier used to indicate a unique installation of a product. . .
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Author Comment

by:Richard_Reynolds
ID: 6473704
That's mean the GUID have relation to software you installed ?

If you install office 2k, you may get a GUID.
If you install another software, you maybe get another GUID, That's right?
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LVL 16

Expert Comment

by:GUEEN
ID: 6473733
Yes that sounds correct.
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LVL 32

Expert Comment

by:jhance
ID: 6474017
>>Can you tell me what software can I use to read the PC's GUID when the machine without any os?

The GUID is an identifier created by WINDOWS.  So if your machine has no OS, it also (by definition) has no GUID.
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LVL 16

Expert Comment

by:GUEEN
ID: 6474037
I do know that Microsoft has some type of 'fingerprint' with XP - only I don't think that is a GUID. j - you know anything about that?
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LVL 1

Expert Comment

by:ajprice
ID: 6474476
A GUID is used just for order's sake in an Active Directory forest.  When you join an AD domain, the Infrastructure Master assigns you a unique 128-bit hexidecimal code that identifies your computer, kinda like a social security number for humans, noone will ever have the same one as you.

I've never heard of any software caring about what your GUID.  And it's impossible to have a GUID without a version of windows loaded.

To find it (computer has to have an OS up and loaded) open up the registry and go to HKEY_local_machine\system\currentcontrolset\services\TCPIP\parameters\interfaces\

That's where the GUIDs live. Only one GUID per machine unless you have a multihoned computer (more than one NIC acting as a separate machine.  
It will look something like TY75U2AI-LL23-V4C9-3577YSS1

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LVL 41

Expert Comment

by:stevenlewis
ID: 6474823
some newer motherboards have them in the bios
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LVL 1

Expert Comment

by:ajprice
ID: 6474990
Have a GUID in the BIOS?  It that's the case then that would be pretty neat.
 
Does the OS Flash it's own BIOS?  How does the GUID get stored in the BIOS?  What happens if you move the CPU to a different forest?  
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Author Comment

by:Richard_Reynolds
ID: 6475513
>>some newer motherboards have them in the bios

That's what I said. Ok, how can I get this GUID from a machine without os?
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Author Comment

by:Richard_Reynolds
ID: 6475533
These comes from Microsoft's Training Kit:

>>Locating the GUID for Client Computers
>>The computer's GUID appears on the following:

>>The label on the side of the computer case
>>The label inside the computer case
>>The BIOS of the client computer
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LVL 41

Expert Comment

by:stevenlewis
ID: 6475548
Richard_Reynolds these are newer machines that have this feature. older machines did not have a GUID
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LVL 41

Expert Comment

by:stevenlewis
ID: 6475552

as I'm sure you have read, that is a security feature when pre-staging to set up for RIS. I have only seen one question about it in my sample tests for the MCSE w2k
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LVL 14

Expert Comment

by:AvonWyss
ID: 6480399
Guys,

A GUID has *nothing* to do with a computer, an OS or a software package. A GUID is a globally unique identifier. A GUID can be computed at any time and will be (theoretically) guaranteed to be unique around the world. Because of this, it's a useful tool for many sitations where someone want to be able to "tag" some piece of hardware or software.

Every COM object has a GUID, and many databases which need to be able to replicate are also using GUIDs to be able to have unique record identifications when replicating their data (for instance, the AD is such a database).

Now also the computer is assigned a GUID: http://www.microsoft.com/windows2000/en/server/help/sag_RIS_pro_Client_GUID.htm
That's probably the one you're looking for. However, what do you need it for?
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LVL 1

Expert Comment

by:ajprice
ID: 6480558
I'm starting to believe that there are more uses for the word GUID out there than one, and we're getting confused on what context it's being used in...

In my first post, I was referring the the Active Directory GUID that is assigned by Windows 2000 when you create an object such as a user, computer, printer, share... whatever.  
  "GUIDs are assigned according to an algorithm that uses time information that is determined when the object is created and random physical information to create a 128 bit hexidecial representation that guarantees uniqueness in the forest."

Apparantly there are other GUIDs in the world than just Windows 2000...

Doesn't sound like that's the one you're looking for though.
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LVL 14

Expert Comment

by:AvonWyss
ID: 6480730
Well, if you want to see what GUIDs look alike:
* Open regedit
* expand the HKEY_CLASSES_ROOT branch, and in it the CLSID branch
* You will see lots of entries like this: {f5078f27-c551-11d3-89b9-0000f81fe221}
    These are GUIDs. (Actueally the ones of the registered COM objects in Windows.)

ajprince, the uniqueness makes them useful not only in AD but in may other situations. The computation algorithm of these values is always the same (as you correctly wrote, time and machine-dependent elements arte included in the calculation, making a unique number which always changes.)
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Expert Comment

by:kupriaa1
ID: 6485236
Yes however in Active Directory computers are not the only objects that have GUIDS. Users and groups have them also.  GUIDS in AD are how (in a simple way) SIDS are related throughout a forest
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Author Comment

by:Richard_Reynolds
ID: 6486647
In fact. When I want implement RIS, I should creat a computer account for the client. When I choose to create a managed PC. I'm asked to input a GUID.

I want to know, if the PC is a new PC(without OS, in most time, it should be), how can I get the GUID?
From:
1.)A label on the side of the computer case.
2.)A label within the computer case.
3.)The basic input/output system (BIOS) of the client computer. (Info come from Microsoft:http://www.microsoft.com/windows2000/en/server/help/sag_RIS_pro_Client_GUID.htm)

But if I can't get it from above 3 ways. how I get it? Thanks a lot.
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LVL 41

Expert Comment

by:stevenlewis
ID: 6487045
YOu don't, leave it blank
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LVL 1

Expert Comment

by:ajprice
ID: 6488266
OK, Now I see where we're going.

You're looking for the UUID, not the GUID.

The Universal Unique Identifier is what is used for prestaging a computer for RIS and can textbook be found on the case or in the BIOS.  Honestly I've never seen either, but I haven't been looking in the BIOS much.

The GUID is something different that what you are needing.

If it's not on the case or in the bios... Microsoft in all their wisdom suggests you contact the computer manufacturer.
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by:cempasha
ID: 8493643
Hi Richard_Reynolds

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by:cempasha
ID: 8511467
3 open questions:
03/05/03 http:Q_20538955.html "A Question about Microsft Script Encoder"
02/19/03 http:Q_20520184.html "Why Exchange2k Can't Receive any Email"
09/11/01 http:Q_20181378.html "How can I get PC's GUID"
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by:cempasha
ID: 8511468
Richard_Reynolds,
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