Quote:
Originally Posted by Grins
Therefore my questions: How do you copy EPUB documents from calibre to the Kobo reader via file transfer? Which of the 3 “device interface plugins” do you use? How many books do you copy onto the reading device at a single time? If you divide 500 documents into smaller quantities, how large are these quantities? Do you switch off the device completely once the file transfer and database update has been successful so that the database can completely rebuild itself?
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There are only 2 device plugins applicable, and only 1 of them comes with Calibre install. Personally, I use the Kobo Touch Extended driver, (which I have to install), but that is because I prefer the experience of using the Kobo's native 'kepub' format.
The advise to limit the number of books you upload to the kobo is to make it easier to identify and troubleshoot problem files that the kobo will be unable to ingest. It doesn't matter if you upload 500 files, or just the 1 bad one, strange and unpredictable effects can happen. If these are all books you have a high confidence are not malformed (and tested on kobo before), I would go ahead and put hundreds of them on there at a time. When testing new files, small batches is the way to go.
Recent firmware updates have introduced bugs with connecting the USB drive that leaves the filesystem and database in an unclean state (and thus, very vulnerable to corruption.) I haven't experienced this in a long time since the most recent 2 updates, but sporadic reports of this happening are still being posted on this board, and the exact trigger conditions still a mystery and very speculative. The best way I know to make sure you avoid this problem is to reboot the Kobo before connecting to PC, (and do so before opening any books.)