Well, you were wright, It was easy.

and have to recognize that koreader makes my epubs to be more readable, I had troubles with the stock kobo reader software and my epubs.
And now the issues. Some kind of stupidity has made me to do things too fast.
So didnīt pay attention enough the recommendation of being careful with preventing Nickel from scanning *nix hidden folders, and now I have my ereader full with covers of books that are in truth, trillions of icons from (wherever), I thought it was something to do later...
So, how do I prevent... or "postvent" it?
https://www.mobileread.com/forums/sh...d.php?t=314220