Think that I'm getting confused about the differences between an Iso retail and another Iso volume. To install an iso retail you need to enter a serial at the begining of the installation process. With this serial you have your installation validated and no need further action. To install an iso volume you need to enter a serial at the begining but after the installation has been completed you need to activate the installation with a kms server. Is above correct?. One more, Is the iso retail the same iso that the volume and according the serial entered at the begining is installing retail or volume?. Thanks a lot.