I have 2 seagate external hard drives and I am looking to set up raid 1 with windows 8.1. I am running into an issue where I cannot find a direct answer to. When I try to set up a mirrored volume aka raid 1 there actually is no option to set it up there is simple, spanned, and striped spanned and striped are both grayed out. I was wondering if windows 8.1 did not support raid 1 anymore or something? otherwise if this problem is not resolved I will need to buy 2 new internal drives and raid 1 those witch is not what I want to do.