After attempting to create a system image backup on an external USB drive of a Windows 7 Ultimate system, I saw a message that "The backup failed. The system cannot find the file specified. (0x80070002)." The window where I saw the error message didn't offer me a way to see what file or files were associated with the error message. It took me many hours to finally connect the error message to an issue with a USB port on the front of the computer. When I moved the cable between the external USB drive and the computer from a USB port on the front of the computer to one on the back, I was finally able to successfully create a system image on the external drive.
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