I would like my system to mount a USB hard drive at boot time, provided it is connected to the system.  The drive is used for backup, and is usually, but not always attached.  Fedora-21/KDE had an option to mount the drive when KDE starts, which is almost as good, but this doesn't seem to be available in Fedora-22.

Is there some standard method in the USB device manager, or wherever, to do this; or do some control files have to be edited?  If control files,which ones and how.

Thanks - jon