Robert Meek suggested using:
> My ProductID = 89580-006-5738705-71882
> My GUID = {0f694440-6a70-11db-8eb3-806e6f6e6963}
I tested this on a multi-OS machine with four versions of
Windows. The values are different for each OS. This appears not to
be a satisfactory solution if this is the case.
Solutions based on hardware serial numbers and/or MAC addresses can
cause problems if external plug-in disks are attached or if the
machine is not connected to a network which causes some versions of
Windows to assign an arbitrary MAC address.
Cameron Cole wrote:
>For the unique machine key we use the Windows Key, Hard Drive
Serial No and BIOS Manu name. Some people like to use >the computer
name and/or the MAC addresses for a machine.
If there is a disk crash or the customer has to re-install the
operating system, this can not be carried over to the repaired
machine without re-licensing, something which costs time and is
irritating for everyone involved.
A method which can be easily implemented if the customer uses a disk
clone and backup program like Acronis TI is needed.
Irwin Scollar
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