Comment 1 for bug 72897

Colin Watson (cjwatson) wrote :

For the time being, it is absolutely necessary to format from the point of view of supportability; we cannot support a mutant system that started out as something else and then had Ubuntu's files just dropped over the top of it without cleaning out what was there before. Perhaps in the future we'll figure out a way to have ubiquity wipe out everything but /home.

Sadly, creating a /home partition can't be the default either, because that means you have to dump the decision of what relative partition sizes to use onto the user, and considering that our partition resizing tools really aren't smooth enough to be foisted on ordinary users who make a mistake in this decision I do not believe that this is appropriate.