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 Post subject: Cloning and disk signature collisions
PostPosted: June 17th, 2019, 7:47 
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Joined: August 9th, 2010, 11:34
Posts: 7
Location: Arizona
I do both a clone of my C drive and an image backup.

On a couple of occasions I have had to boot the newly cloned drive and forgot to remove the original source drive.

This gives me Disk Signature collision which I think I understand.

What I'd like to do is change the disk signature of the original source drive which is a GPT SSD.

All the articles I've found on the net seem to suggest using diakpart which I have no problems using. Where I do have an issue is with determining how to provide a new disk signature.

What is the format of the GUID GPT disk signature?

How do I create a new disk signature? Is it just a string of random numbers?

If diskpart doesn't like the format or the actual id how do I create one that diskpart will accept.

Thanks


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 Post subject: Re: Cloning and disk signature collisions
PostPosted: June 17th, 2019, 20:03 
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Joined: September 8th, 2009, 18:21
Posts: 12351
Location: Australia
snifferpro wrote:
How do I create a new disk signature? Is it just a string of random numbers?

What is Disk Signature Collision? How to fix Disk Signature Collision problem on Windows?
https://www.thewindowsclub.com/disk-signature-collision-problem

The signature consists of 8 random hexadecimal digits (4 bytes) in sector 0.

An Examination of the Windows 7, 8/8.1 or 10 MBR ( Master Boot Record ):
https://thestarman.pcministry.com/asm/mbr/W7MBR.htm

An Examination of The Microsoft Windows 7 and 8 GPT 'Protective' MBR and EFI Partitions:
https://thestarman.pcministry.com/asm/mbr/GPT.htm

Quote:
These four bytes from offsets 1B8h through 1BBh are called the Windows Disk Signature or NT Drive Serial Number.

You can examine sector 0 with a disc editor such as DMDE:

https://dmde.com/

_________________
A backup a day keeps DR away.


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 Post subject: Re: Cloning and disk signature collisions
PostPosted: June 18th, 2019, 6:12 
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Joined: August 9th, 2010, 11:34
Posts: 7
Location: Arizona
fzabkar - Thank you very much for your answer and links. It definitely helps clear things up for me.


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