My Mac (MacBook Pro, 15-inch, Early 2011, OSX Yosemite 10.10.5, 2.2 GHz Intel Core i7, 4 GB 1333MHz DDR3) is not in the list of Macs that will support Windows 10 at the end of the Apple support article Use Windows 10 on your Mac with Boot Camp; does that mean it will not support it?