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I'm wondering about what the Windows UUID that you can get with "wmic path win32_computersystemproduct get uuid" really comes from and when it will change. Microsoft says, the UUID comes from the SMBIOS information (https://msdn.microsoft.com/en-us/library/aa394105(v=vs.85).aspx), what seems to me that the UUID only depends on the system's BIOS. So what when I do one of the following things:
Will any of this actions make the UUID to be changed? Or is it possible to have to different Windows systems with the same UUID (b)?
Thanks a lot
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The UUID is based on the physical computer's identifier and the path to the virtual machine's configuration file. This UUID is generated when you power on or reset the virtual machine. As long as you do not move or copy the virtual machine to another location, the UUID remains constant.
To change the UUID of the filesystem, you need to unmount it. Once the device is unmounted, use tune2fs command followed by -U flag to generate random UUID. Once the UUID is changed, run the following command to verify the changes.
The UUID structure defines a Universally Unique Identifier (UUID). A UUID provides a unique designation of an object such as an interface, a manager entry-point vector, or a client object. The UUID structure is a typedef 'd synonym for the GUID structure.
None of these actions will change the UUID. The UUID is a machine-unique ID, like a serial number. It is stored on the motherboard (typically in the system flash eeprom, along with the BIOS) and reported by the BIOS to the OS in an SMBIOS structure, as you guessed.
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