I ran into the same problem that others have with error messages during the creation of the recovery media on a Flash Drive. This article talks about being certain to disable all anti-malware programs and other open programs during the process. These instructions allowed me to make a boot Flash Drive very easily. Maybe they will work for you as well. I am using PHDM 2015. Much easier in my opinion to have a collection of small Flash Drives for different tasks than using CD's. Good luck with your process!