My Kobo Touch has epubs from Kobo and other places on it
I try and just keep maybe 100 books on it from my library to stop it going slow
However now I find it is slow anyway through calibre adding and deleting books and just freezes after deleting just one book
Reading on it is fine though
Awhile ago I reset it But wary of doing that again as it froze midway and took a long while to get back to normal
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Was wondering if there is a quick way of deleting ALL the books on it and then I could just add maybe 20 at a time to read?