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?


Gotcha. Yeah, the stuff in fstab is just a convenience; it’s equivalent to running a bunch of mount commands at boot. You might be able to just run “mount” again without the '-o remount" option. I was just listing that in case you were seeing some kind of errors in trying to manually mount it.