I have just acquired a new Dell with Windows 8.1. Try as I might on different websites, including Microsoft and Dell, I just cannot get a straightforward answer to my question. What size and type of Write Once disc do I need to create the recovery/rescue disc and/or USB stick. It is a while since I needed to get into the latest technology having discarded my XP, so I am way behind. Also is BDR compatible with Windows 8.1. Please advise.