VMware ESX Upgrade 5.1 to 5.5
The following ESX/ESXi 4.x and ESXi 5.0 versions are supported for upgrade to ESXi version 5.5: ESX/ESXi 4.0.x (including all released updates and patches) ESX/ESXi 4.1.x (including all released updates and patches) ESXi 5.0.x (including all released updates and patches) ESXi 5.1.x (including all released updates and patches) Download the ESXi 5.5 from the VMware Website. My post related to Download vSphere 5.5 software. 1. Attach the ISO image of the ESXi 5.5 to your ESXi 5.1 if you have any remote management server tools like ILO, DRAC or insert the installation media into the server. 2. Make sure Server BIOS is configured to boot from CD-ROM 3.Once It is booted with installation media, Select ESXi-5.5.0-1331820-standard Installer and Press Enter 4. ESXi 5.5 installer will load the Files and it may take few minutes to complete. Once it is loaded , It will Relocate the Modules and start the kernel. 5.In the Welcome Screen of VMware ESXi 5.5.0 Ins