Depending on your use of the VM, you should be able to decide pretty easily if you can predict the physical storage space needed.

The difference is pretty straightforward: a fixed-size drive carves out a specific amount of storage space for the guest OS, while a dynamically allocated drive will expand the space as needed. Simple, right? Also, now is a good time to take a moment and decide whether you will create a fixed size or dynamically allocated virtual hard drive for your VM. When it comes to virtualization, the operating system you already have is the host OS. The Basicsīefore we really get going, there’s an important distinction to make about terminology. Best of all, it takes just a few minutes to do. Whether you want to learn bash scripting, try out a new program, or test hardware compatibility, running a Linux virtual machine (VM) will get you there. And now, it’s easier than ever to do it without wiping out your existing setup. There’s something refreshing about installing a new operating system onto a computer.

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