In the last article I have covered the upgrade process from vCenter Server 5.0 to vCenter server 5.1. In this article I will cover a quick how to on upgrading your ESXi host to version 5.1. In this case, I will perform an in place upgrade of the host. Before you proceed with upgrade in your production environment, please read chapter 6 “Upgrading and Migrating Your Hosts” from the vSphere Upgrade guide.
- Boot your server from the CD or USB drive containing the ESXi 5.1 installer.
- Press Enter to start the interactive installer.
- When the files are loaded, press Enter to continue.
- Press F11 to accept the EULA.
- Select the disk containing previous installation of ESXi and press Enter.
- When the scanning is completed you will be presented with the following message. Select the Upgrade option and press Enter to continue.
- Press F11 to confirm the upgrade of your ESXi host.
- When the installer finishes the upgrade, remove the installation media from the host and press Enter to reboot.
- When the hosts reboots, you should see the familiar screen with the software version , host name and IP address.
That’s it! You are done. This process takes literally minutes to complete. 🙂