You are right, #2 has Raspbian GNU/Linux 8 (jessie). Although OSMC is part of the ecosystem, this specific machine has not OSMC. Therefore, maybe this question exceed the topic of this forum. Please, if this is the case, tell me.
In other hand, I thought this systemd problems are derived from follow a tutorial in this forum:
So, the reasonable step was to ask here first. Indeed, the info in this thread is being very useful for me.