I am trying to find out how to go about mounting a hard drive I have for using as a Samba share. I have tried the standard fdisk -l so I can locate the mount then would have used the mount command and edited the fstab to configure it to mount everytime I rebooted. However, I have finding out that almost everything is locked down pretty hard. So I am curious how do I go about this? 
I am using a Raspberry Pi 2 model B with LibreELEC 7.0.0.
Thank you for your help