Quote:
Originally Posted by Aleron Ives
What's the difference between BookReader.sqlite and KoboReader.sqlite? Does only one of them tend to corrupt?
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KoboReader.sqlite is the main database file that calibre interacts with. The BookReader.sqlite file is an encrypted database and I am not able to say anything about what it is for. There is also a 3rd sqlite file called fonts.sqlite which, oddly enough, lists the fonts in the user fonts directory.
KoboReader.sqlite is the one that corrupts more often in my experience but then it is the larger and more active database. On my Sage, it is 69MB compared to 19KB for BookReader and 9KB for fonts. My suspicion is that this likely due to calibre attempting to use KoboReader.sqlite when you connect your Kobo ereader to calibre.