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There's always Clonezilla
To get a good base image to reinstall a specific machine from, I like to get a complete image of the hard drive.. Clonezilla Live is my choice since it's free and has never failed me. The drawback is that it can take some time depending on the speed of the CPU (for compression) and the space in use on the drive. But if you have the computer for the better part of a day it shouldn't be an issue.