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					Originally Posted by  kovidgoyal
					 
				 
				Yeah, but this is a one time operation (during initial import of your book collection into calibre), not something that is done repeatedly and often, so adding dedicated UI for it is not worth it -- especially given that there are perfectly good ways to achieve it by combining two tools -- the file explorer and calibre. 
			
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 I was imagining that Add books option #2-3 be changed behind the scenes to accept a list of "root folder"s.
No idea if that is worth it of course 

 but it *could* be done without a dedicated option #4, so that itself shouldn't be a blocker IMHO.
I would never suggest adding yet more dialog boxes or menu entries 

 unless there was a 
compelling need.
Granted that it can be done with a minimum of fuss by pre-sorting the books.