Does anybody know what is the Signature property of the Win32_DiskDrive WMI class? Is it unique or users can change it like disk volume serial number?
Thanks.
+2
A:
The "Signature" property was introduced with Windows XP and is used for disks that are used as shared cluster disks. In my understanding it is created the first time the disk is connected to a windows system and will not be changed even if the disk is connected via another controller (or in a cluster scenario even via another computer).
For a detailed explanation see MSDN: Creating Physical Disk Resources http://msdn.microsoft.com/en-us/library/aa369328%28VS.85%29.aspx
Mischa
2009-08-28 12:08:24
What if the user reinstalls the OS? Does the OS generates the same signature?
Mohammadreza
2009-08-28 13:41:33
In my understanding the signature is never touched again if generated before. Because a cluster disk must maintain the same identity across all machines that access the same disk even in case of a reinstall of one cluser node.
Mischa
2009-08-28 15:28:33
A:
I take HDD to another machine and Signature and PNPDeviceID CHANGED. So i think OS generates this signature.
(Sorry for my bad english)
sharpensteel
2010-10-11 09:42:30