In step 4 of the OSCAR installation wizard, it is not necessary to collect the MAC addresses of your client nodes. However, to make sure all the proper steps of the OSCAR installation are performed, you should ensure that you open the Wizard pane and click on the ``Done'' option.
The Add / Delete client node functionality has not been well tested in this configuration. While there should not be any problems in adding a node to the cluster using boot floppies 8, please be cautious when adding a new node to the cluster.