truenas is a storage appliance server.
it is designed, tested, and intended to be online 24/7.
it takes forever to startup *for a reason*, just like any other server. 5-15 minutes is pretty typical for any server.
they are testing that things work, starting up a ton of services, making sure those start correctly etc, etc.
as neither of you have followed the forum rules....it's difficult to say much more, but I am pretty sure an "AMD FX" is not supported hardware...