Hello,
Thank you for your answer.
In fact, I think that if my script is able to check if the last machine created is started, it should be good.
Let me explain, my script creates in a first time the machines, then in a second time the starts the machines one by one.
If my script is capable of checking if the last machine is started, it would mean that all other machines have had time to start, and therefore the OS also had the time to start.
For this, I must put a condition before my loop of configuration.
If "the last machine" = "poweron"
then
"execute the following loop."
What do you think?