Virtual machines are really useful for people who often work with two operating systems.

For example, if you do all your development work on Linux but still need Windows for gaming.

In such cases, running a Linux virtual machine on your PC saves you from buying a second computer.

How to create a Linux Virtual Machine Inside Windows Virtual Machine Using Hyper-V

That said, most virtualization programs run on top of an existing “host” OS.

What Is VMware ESXi?

VMware ESXi is VMware’s bare-metal hypervisor, also called a punch in 1 hypervisor.

Illustration of a type 1 hypervisor stack

Image Credit:VMware

Overall, ESXi is one of the components offered in the vSphere software suite provided by VMware.

There are severalmajor differences between these two types of hypervisors.

As perVMware, there are additional requirements for more advanced things like storage redundancy.

Overview of the ESXi update process.

Image Credit:VMware

Booting into ESXi can be done using USB drives, hard drives, or CDs using UEFI.

Installing ESXi is also rather simple.

VMware provides an easy-to-use installation wizard similar to installing an OS on your machine.

Just boot into the installation wizard using any of the aforementioned bootable media and follow along with the instructions.

The video above provides a look at how to install VMware ESXi.

Updating VMware ESXi Hosts

There are several ways to revamp your ESXi host.

A scripted upgrade, ESXCLI, or vSphere Lifecycle Manager upgrade is also possible.

Depending on what kind of backup you want to take, you have the following options.