I’m running a Ubuntu server on my old laptop with an external HDD connected to it. The external HDD is powered independently from the laptop, as it is plugged into the wall.
During a power outage, my laptop remains operational due to its battery, but the HDD shuts down. When power is restored, my laptop does not automatically remount the HDD, and I have to reboot the system manually to access it.
Does anyone know how I can resolve this issue?


I had a laptop lying around and computer parts are too expensive now to build my own server, so that’s what I went with. Is the concern you have involving loss of data?
One concern, yes. Others such as parking heads. Don’t want platters spinning down with drive heads hovering. Power spikes won’t do the circuit boards any good.
Doesn’t hurt to show servers some kindness even if it’s a laptop in a closet.