Using Virtual PC 2004 Differencing Disks
Check out Matt’s article on Using Virtual PC 2004 Differencing Disks
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I use Microsoft (formerly Connectix) Virtual PC to test servers etc, and I find it very useful to have a handfull of different OS's pre-installed into VPC. To speed things up even more, you can use the disk differencing feature.
Disk Differencing works by storing only the changes to an original image in a new VPC virtual hard-disk.
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