You can change the guest operating system configuration of the virtual machine on the General Options pane in the Virtual Machine Properties dialog box.

Verify that you are connected to the vCenter Server or ESX/ESXi host on which the virtual machine runs.

Verify that you have access to the virtual machine in the vSphere Client inventory list.

You must power off the virtual machine.

1

In the vSphere Client inventory, right-click the virtual machine and select Edit Settings.

2

Click the Options tab and select General Options.

3

Select a guest operating system type and version.

4

Click OK to save your changes and close the dialog box.

The virtual machine configuration parameters for the guest operating system are changed. You can now install the guest operating system.