A known issue with the Odroid XU4, HC1, and HC2 is that it (uboot?) does not properly park the hard disk heads before/during shutdown or power cycle/off.
So, the disk drive is forced to emergency hard retract the heads when power is shutdown/cycled.
This is of course a violent action for the HDD and should be avoided.
Use this odroid.shutdown script and install into /lib/systemd/system-shutdown/.
https://wiki.odroid.com/odroid-xu4/troubleshooting/shutdown_script
Recommend adding to armbian for XU4 distros.
