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.
Our friend and comrade IronFly has reached his 10,000th post to our little Community. During the last 4 years he has helped countless Acer customers providing help, advice and answers. The Acer Community team feels honored to count you as our friend. Thanks IronFly!