VirtualBoxĪlthough there are a number of popular VM programs out there, VirtualBox is completely free, open-source, and awesome. There’s no need for constant backups and restores. If something goes wrong, whether with software installations or by infecting your system with a virus, you can easily switch back to a previous snapshot. This lets you experiment freely with your environment. You can, at any point, save the state of your machine with a “snapshot” and revert back to that state if you need to. Because you can configure your virtual hardware, you can even install an old OS like DOS or OS/2.
You can run software written for one OS on another without needing to reboot. Virtual machines allow you to run more than one OS at a time.
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