How to upgrade FreeNAS to TrueNAS?

In the following tutorial a quick demo on how to upgrade from FreeNAS 11.3 stable to TrueNAS CORE 12.0 stable. In my HomeLab I am using FreeNAS from 2013 on. From now on TrueNAS CORE replaces FreeNAS.

The upgrade in a view notes:

Look which services jails and VMs are running.
Change the train to TrueNAS 12.
Be patient when the upgrade is taking place.
When the login page is back for logging in check all the services, jails and VMs. In my case one Debian VM was not coming up. I had in the NIC device to generate a MAC address and to bind the NIC of the VM to the physical NIC of the TrueNAS.

All this can be seen in the video below.

Upgrade from FreeNAS to TrueNAS CORE

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