vSphere 5.5 : Upgrading ESXi 5.1 to 5.5

VMware recently released vSphere 5.5. In this blog post I will explain the steps in upgrading ESXi 5.1 to ESXi 5.5. Before we start off its understood that the hosts has been prepared for upgrading by powering off/migrating the VM’s onto another host. Start off by mounting the ISO image on the Physical host and rebooting it.   Now the Installer will be loaded. choose the ESXi 5.5 Standard installer.   Once the ESXi Installer is chosen, the Installer loads