[lumpynose]

Question 1: What do I lose by unchecking "Enable Extended Kobo Features"?

All of the books on my Kobo are either from Amazon and converted in Calibre or are epubs downloaded from Project Gutenberg and its ilk. There is a problem that either davidfor or DNSB explained to me that I was experiencing where if a book doesn't have a cover then the margins are wacko, due to the spans added by the driver. So I reverted back to the vanilla Kobo driver.

I decided to try re-enabling the extended driver and unticking the Enable Extended Kobo Features and that solves the problem. I was wondering if I lose any other features besides the spans, which I don't think I utilize in any event.

Question 2: What's an easy way to delete the many books I'd previously uploaded with the extended driver that are in kepub format?

I'm on Windows so I could do "dir *.kepub.epub /s/b" to generate a list and then edit it and add a del to the beginning of each line. Can I simply do that? And if so should I do anything after that to clean up or mend any metadata or whatnot on the device?

And is that extension .kepub.epub correct? I was expecting them to have the extension .kepub.