I have noticed these 2 folders named $Windows~.BT, which has subfolders Source and Panther, dated July 2016. The other folder that stands alone is $Windows~.WS ( empty ) but modified date is today's Jan 14 2017. The above folders show 2 short text documents files and 2 .XLM files. I suspect that this has something to do with Win 10, which I would like to install. What are these folders and do they install Win 10 for me. BTW, the dollars signs that preceded the folders above was not really dollars signs, but its the closest to what is shown.