ABSOLUTELY BRILLIANT reply by Sam_Vanderleyden - thanks so much !!!
And...still a very nasty sticking point which AFAIK, remains UNSOLVED.
In fact, I've just posted this thread which is very related:
Too many little niggly & truly stupid little 'paper cuts' that have been mostly ignored with workarounds that AREN'T functional or within reach of most users.
Because of these sorts of things I haven't posted here in a while - when I did it brought me some small satisfactions now & then, but I have found it to be easier to just use U/M & not ask for help because there's still LOTS of stuff for which no solution exists...OR:
Merely doing a general/open DDG search will reveal goodness or a total lack thereof - in which case it is time to just=>
Give that query up rather than banging one's head against it.
And SPECIFICALLY regarding this EXACT topic:
If/when I get TOTALLY stumped by not being able to read/write my own USB media after a couple of tries with or without using root access - I change the venue, which REALLY annoys me - and give in to firing up that OTHER OS - which I would totally prefer NOT TO NEED anymore for anything, EVER.