Upgrading to Ubuntu 20, *how* to back up?

[Colin Law]

On Sat, 25 Apr 2020 at 21:08, Peter Flynn <peter at silmaril.ie> wrote:
>
> On 25/04/2020 14:09, Bo Berglund wrote:
> > I have seen this disclaimer on so many pages describing the upgrade to
> > a new Ubuntu version:
> >
> > For example on this page:
> > https://ubuntu.com/tutorials/tutorial-upgrading-ubuntu-desktop#1-before-you-start
> >
> > they write:
> >
> > "We recommend that you backup your existing Ubuntu installation before
> > you update your computer."

> ...
> If you really want to back up the whole system (it will take longer),
> install something like timeshift, which works like Apple's TimeMachine.

The recommendation is to backup the whole system, at least that is how
I read it.  Whether it is a sensible recommendation I am not sure.

Colin L.