How to Update VMware ESXi 4. This guide explains simple steps to update VMware ESXi 4. The update can be done in several ways depending on the running environment of Server virtualization software VMware ESXi. The easy and recommended way is, in place update buy booting the hypervisor server with ESXi 5 installation ISO or DVD. I  have a running ESXi 4. VMware workstation for testing purpose which is on Windows 7 host. Check the earlier guide how to install ESXi on VMware workstation on desktop computer. Vmware Esxi 4 Iso' title='Vmware Esxi 4 Iso' />There are many ways to upgrade VMware ESXi Hypervisor. Depending on whether the host is part of a cluster or not, managed via vCenter server or standalone host. Also. I am trying to install server 2016 and am having an issue moving the ISO over to the datastore it only copies 4 of 5. VMware recommends to do the update in following ways, find the complete guide from official site here. Sphere Update Manager. Upgrade or migrate interactively using an ESXi installer ISO image on CDDVD or USB flash drive. VMware, a global leader in cloud infrastructure digital workspace technology, accelerates digital transformation for evolving IT environments. Learn More Now. Update process requires to reboot ESXi server, so obviously all working virtual machines should be powered off or paused properly. Also it can take around 3. VMwares document. Here is the running version on VMware workstation. I will show how to update the current 4. Connect to Hypervisor server by v. Sphere client and shutdown or pause the working virtual machines. Shutdown the ESXi 4. ESXi v. Sphere 5 installation medium. You can download 5. ISO from official site here. Burn it on CD if its a physical host or use the same ISO If it is running on virtualized environment, like mine4 Now start the host from CDDVD. Select first option as installing on new host. Wait for all scripts to be loaded and press Enter to continue at welcome screen. Press F1. 1 to accept license term. It will list out the detected disk partitions in next screen. Select the partition which is having VMware ESXi 4. That will be shown with mark. Next screen will inform about existing ESXi and VMFS datastore. Select first option for force migrating to ESXi 5. You may get few warning message now. You can ignore and continue the installation by pressing Enter or F1. Last warning will be about roll back issue after 5. Anyhow, since Im doing this on virtual environment with VMware workstation, I already took a snapshot. Call Of Duty American Rush 2 Trainer Games. The running update process of ESXi 4. ESXi 5. 0. Reboot the server once update is completed. Remember to remove installation CD or ISO before reboot. Thats it, update is done. Reboot will take some time. You should get the same virtual machines with exact stats like powered off or paused and settings with the latest ESXi 5. Though this guide is late in getting published, but Im sure this will be useful with screenshots.