The last time I lost all most of my data was when I tried upgrading Ubuntu to the next major version using the upgrade manager in Ubuntu. I thought that since t

The last time I lost all most of my data was when I tried upgrading Ubuntu to the next major version using the upgrade manager in Ubuntu. I thought that since the UI was so friendly looking, it must be the safest route. WRONG. It was the second time that I trusted Ubuntu's UI for doing something critical. Never again. Now I always back up all the files I need onto an external drive and then I install the OS from scratch. Only trust the command line.