CentOS-7-x86_64-DVD-1708
/etc/yum.conf proxy = http://proxy.example.com:xxxx
https://www.snri.net/Windows10.iso
https://www.snri.net/Win10.zip
https://shirtmatchkicks.com/ https://b.rick.jp/653
https://qiita.com/nmxi/items/7950fb12ef925efa276d
