If you use shutdown or poweroff you will not be able to power back the board by pressing the RESET or REBOOT button.
This is the schematic of the Galileo Gen2, Schematic
Even though, you can use an external circuit functioning as a button or switch in order to control the power of the board.
Charlie, thanks for your reply.
Just to clarify - I can see from the schematic the power button is "NOT USED" on the quark in the Galileo Gen 2.
When you say you can use an external circuit using a button or switch to control the power, did you have any classy result in mind, or were you thinking more of just a genuine hardware switch?
I am using the POE module so not sure how this would work.
Yes, I had in mind a genuine hardware switch. Not having a straight way to reboot the board after using poweroff or shutdown I suggest to do something like a switch. If you are using the PoE you can also create a switch by using the cable but as you said it won’t be very classy.