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?


Then set up a cron job that periodically tries to read a file on the drive, and if that command fails, then execute
sudo mount -aLike, set up a root account cron job to run
touch \external_drive\test_file.txt || mount -aat 5-minute intervals.