[Mrs_Often]

Congrats on your new Aura H2O2!

Kobo firmware ignores any file structure, as you’ve discovered. The Series you can search for means book series, e.g. Harry Potter 1/7; Harry Potter 2/7 etc. Calibre is very useful in adding series information to the book metadata and having it displayed on the Kobo device.

There is another sorting/structuring option: a “shelves” system that used to be called shelves but is now called “Collections”. You can either manually add books to Collections on the device, or have Calibre automatically assign books to Collections in the device in several different ways. (E.g. you can make a custom column in Calibre and have that be the Collections column where you enter the column name you want; or you can have Calibre make a column based on book genre or from data from other pre-existing column etc.)

As I see it, you have two options:

1. You keep your file structure and use KOReader (I don’t know about incompatibility, but I can’t imagine there’s not a version that would work with H2O2.)

2. You spend a little time with Calibre and set up Collections instead of using your file structure


I strongly recommend the latter, Calibre is very powerful in all sorts of ways and as your library grows, Calibre will be much easier to work with than Windows Explorer and a file structure with ever growing file paths...


EDIT: Ah I see boriar beat me to it... oh yes and just to add: you don’t need the Kobo Desktop software indeed, unless you don’t want to use WiFi for updates.