You can think about it like holding a party for your friends. This additional operating system is called the guest OS. When we run a virtual machine on our system, we're running a completely separate operating system on top of the one we installed previously. The host OS supports all the utilities and applications we'll run on that system. When we use a boot disk or a USB stick to install an operating system on bare metal, we're installing the host OS. It's obvious, but no VM or container can exist without bare metal supporting it. When we refer to a computer's physical hardware, devoid of any operating system, we call it the bare metal system. Shortly after flipping the switch the monitor will say that it cannot find the operating system or boot disk. If you've done this before you know that it won't get very far. You've selected each component, assembled them, and then powered it all on. Imagine that you've built a computer yourself. Fortunately, there's some terminology that can help us. Whenever we talk about virtualization or containerization it can be difficult to know if we're talking about the VM, our OS, or the real physical hardware that we're using. Prerequisitesīare metal, the host OS, and the guest OS Install Docker on macOS, Windows, or Linux. The difference between Docker edge vs.Why Linux is Docker's native environment.Installing Docker is easy, but there are some details you may want to consider before you download and run the installer.

Install docker for mac edge