![]() Or it can run inside an internal network that only exists on the host PC. The networking can even be tweaked to seem like the VM is another computer on the same network – it is then accessible to other computers, like any other. Optical discs can either be the real drive from the host PC, or a virtual CD which is in reality an ISO file on the host disk. ![]() Hard drives are emulated through the host PC but are in reality a large file on the PC running the VM. Since a normal PC also needs access to physical things such as CD-ROMs, hard drives etc, the virtualization platform needs to provide those. Virtual machines are run under a tool called a virtualization tool, which runs on your PC (the host computer). In fact, virtual machines are more of a resource isolation mechanism these days, but the overall idea remains true: a VM acts like a physical computer from the point of view of the OS and apps that run on it. Modern virtual machines are much more optimized, and use the latest hardware virtualization technologies to avoid emulating as much as possible. Virtual machines (VMs) are sometimes thought of complete software emulation of hardware systems. ![]()
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