Install over current truenas install

[moortu]

Is it possible now or in the future to install it over a current truenas install?

or is it always from scratch?

[Mawson]

For now you do have to start fresh.

Jon has said that it might, MAYBE, be possible to convert existing TrueNAS SCALE installs in the future, but not any time soon, and certainly not before 1.0.