VMWare ESXi just upgraded to version 6.5 and those of that are part of the VMware Users Group (VMUG), we were just able to get our hands on the ISOs.
To upgrade VMware ESXi, it is very simple, just load the ISO on a bootable USB Drive, plug it into the server and let it upgrade for you. For me its a bit easier, as this is a brand new VMWare ESXi server, and if something went wrong who cares, I have nothing on it.
First step is the hardest, create a Bootable USB with the VMware ESXI 6.5 ISO on it. For my needs, I use Rufus. Its free and portable on Windows.
The setup couldn’t be easier, download Rufus, download your ISO, plug in your USB, click Create a bootable disk using ISO Image and click on the CDRom Icon. Select your ISO and click Start. In a couple minutes you will have your bootable ISO.
Next step is to install the Update. Plug the newly create USB Drive into your server, and boot from it.
Once the Installer loads hit Enter
Hit F11 to Accept the EULA
The installer will verify your devices and continue.
The installer will discover the device that the previous installation of ESXi is installed on and select it for you. Hit Enter, and select the Upgrade Option that works for your installation. For me it didn’t matter as I have no VMs installed currently.
ESXi will ask you to confirm the install and then it starts installing. Once completed, remove the media (USB Drive) and the installer will reboot for you.
Now one of the benefits of 6.5 is that there is no more “Fat” Client. Its all HTML5 based. 
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