The following procedure will walk you through the steps involved in upgrading ESXi 5.5/6.0 to ESXi 6.5 using the ESXi installer:
- Boot the host with the ESXi 6.5 installer ISO mapped to it.
- Choose ESXi 6.5 standard installer from the boot menu and press Enter:
- Once the installer is fully loaded into the memory, you will be prompted with a Welcome to the VMware ESXi 6.5.0 Installation screen. Now press Enter to continue.
- To accept the EULA and continue, press the function key F11.
- Select the storage device that has the previous installation of ESXi and press F1 to view the disk details:
- On pressing F1, it will show you ...