On Thu, 11 Oct 2018 06:14:44 -0700 (PDT)
wrote:

You've already got easy to operate software. OPen file manager,
select all, copy. Go to your new external usb disc, create a new
folder and paste. It could not be simpler.

That only works as long as you remember to save a fresh copy of
anything that changes, or regularly save everything then de-dupe it.