I found an article: (Automatically mount USB external drive with autofs -
https://linuxconfig.org/automatically-mount-usb-external-drive-with-autofs
)
There the problem is seriously explained ... (differently than in other articles there is explicitly considerate the mounting of an USB HD).
And there is suggested to use "udev" to create a "USB device base name permanent" for the device... (and this look to me to be advisable).
But following this procedure the complexity of the problem is growing exponentially (I need also install udev ?).
----------
So I would like ask some help, before to give up... :-).
What are the correct steps to do the automatically mounting of a HD in order to use it for backing up data on USB Hard Disk ?
Thank you
Angelo