I installed and configured Samba once on the next Ubuntu Server 14.04.5 LTS as described in this article Installing and Configuring Samba in Linux.
And after restarting the system, not everything was started, smbd and nmbd were started, if they can be restarted like this:
sudo restart smbd sudo restart nmbd
But you can not connect to the disk and you still had to execute the command:
sudo service samba start
For samba to automatically start at system startup, execute the following command:
sudo update-rc.d samba defaults