Define true virtualization with example.

True virtualization, also known as full virtualization, is a method of abstracting an entire device such that the underlying hardware is completely hidden from the software running above it. This means that software (including an operating system) runs on a virtual machine exactly as it would on physical hardware, without any modification. The virtual machine simulates the hardware to the software for this to happen.

Here's a step-by-step explanation:

1. Abstraction of Physical Resources: In true virtualization, the physical hardware of a computer is abstracted or hidden. This includes the CPU, memory, storage, and network resources.

2. Creation of Virtual Machine: A virtual machine (VM) is then created on top of these abstracted resources. The VM is a software emulation of a physical computer.

3. Installation of Operating System and Applications: An operating system can then be installed on this VM, just as you would on a physical computer. Applications can also be installed on this operating system.

4. Execution of Applications: These applications run on the VM as if they were running on a physical machine. They interact with the VM's emulated hardware, unaware that they're not running on actual physical hardware.

5. Management by Hypervisor: All of this is managed by a piece of software called a hypervisor. The hypervisor is responsible for creating, running, and managing VMs. It also mediates access to the underlying physical resources.

An example of true virtualization is running Windows on a Mac using a software like VMware or Parallels Desktop. The software creates a VM on the Mac, installs Windows on that VM, and then runs Windows applications on that VM. The applications think they're running on a physical Windows machine, when in fact they're running on a VM on a Mac.