You can not make recovery disks after upgrading to windows8, but here is a tip. IMMEDIATELY copy that winold folder to a flash drive or external hard drive. It will disapear after 30 days. This way, if you want to revert back to win7, you have the files and can copy that folder back to the C drive if neccessary.
Member RevoMaxx is quickly moving up the ranks of Acer Community. He joined us in September and is already making a difference. It's great to see new members like him make a difference only after a few months. Thanks RevoMaxx!