1-12.Linux Mint Upgrade のバックアップ(No.1)

まずは、17.3→18.0へのupgrade
https://kledgeb.blogspot.com/2016/07/linux-mint-14-linux-mint-173linux-mint.html
https://community.linuxmint.com/tutorial/view/2316

次に、18.0→18.3へのupgrade
https://kledgeb.blogspot.com/2017/11/linux-mint-70-linux-mint-183.html

そして、18.3→19.0へのupgrade
https://kledgeb.blogspot.com/2018/07/linux-mint-90-linux-mint-19.html

最後に、19.0→19.1へのupgrade
https://toshio-web.com/how-to-upgrade-to-linux-mint-19-1
http://baker-street.jugem.jp/?eid=499
https://blog.linuxmint.com/?p=3715