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- Software development and testing
- If you frequently test hardware, operating systems, and applications, you know that chances are you're likely to spend many frustrating hours rebooting while you troubleshoot problem apps, drivers, services, and patches.
- To sample alternative operating systems
- Without committing a dedicated partition to the job. Since VMs can use virtual partitions (a partition that lives inside a file of dynamic or fixed size), you don't have to worry about reclaiming any hard drive space lost to experimentation.