I am trying to do Bootcamp on a 2012 Macbook Pro but I am facing issues. When I insert even a 64 Gb formatted flash disk and start the Bootcamp process I get a message that there is no space to create the Bootcamp disk. I down loaded the windows 10 ISO files and copied to a flash drive. I am able to boot into Windows but then I get a message that there are missing drivers for Windows. Kindly provide guidance to resolve these issues.