Thread: Guide to Collections Management with calibre (Touch / Glo / Mini /Aura)
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Old 05-04-2014, 01:06 AM   #367
davidfor
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Posts: 24,905
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Join Date: Jul 2011
Location: Sydney, Australia
Device: Kobo:Touch,Glo, AuraH2O, GloHD,AuraONE, ClaraHD, Libra H2O; tolinoepos
Quote:
Originally Posted by descartes View Post
davidfor, I was asking because when I used the ‘Save to disk’ option in calibre to save via the cardreader, the result basically duplicated the Calibre Library folder which has a folder for each author that also contains a folder for each book that contains the epub book, its cover and a metadata.opf file.

I then tried a second method, ‘Save to disk in a single directory’, that saved only the epub files themselves. I didn’t think that was correct since for some reason I felt it was important to have the metadata file export with the epub as well. I mean, isn’t that how the kobo knows what plug-in mods have been made with respect to collections, sorting, series, etc.?

Sorry, my bad... When I used the "Save to disk' option, I only selected (10) books; therefore, I saw (10) folders; however, when I used the other option, I selected (100) books and since the folder was set to 'sort by type', I saw the (100) epub files first instead of continuing to scroll through the entire folder contents to see the covers and metadata files.
No, the Kobo devices don't use the OPF file. They read the metadata from inside the books. And the device has no knowledge of any the changes made by the plugins. They only read the basic metadata. Anything else is done by the driver.

The cover file is also not used. The devices generate the cover from the first page of all the formats other than kepubs. For these, the image file is extracted from the file.

You can prevent the extra files being created by changing option on the "Saving books to disk" page of the calibre preferences.
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