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How does Windows create a Volume Identifier as used by Mount Manager? RRS feed

  • Question

  • I notice that if I plug the same USB memory stick into different Windows 7 machines and on each machine issue the mountvol command, that each machine reports a different 'volume identifier' (GUID) for the memory stick.

    Given that Windows recognises a previously inserted USB memory stick by this volume identifier, (so that it can assign it the same drive letter again), it must have a consistent algorithm to generate it - at least per Windows install.

    Where can I find information on the algorithm that Windows uses to generate the volume identifier?

    Many thanks.

    Thursday, February 21, 2013 8:25 PM