[abrogard]

I don't understand 'extra titles' when found in a library maintenance check.

They are, it says, books found in the library which have no corresponding entry in the database.

That seems clear enough. There's a book that Calibre has copied into it's own folder but it hasn't listed it in the database. The database would be the index of all titles in the library I guess.

Well okay. But why? And why not enter them now in the database?

And what am I supposed to do about it? Apparently all I can do is delete them. But why would I want to delete them? Wouldn't I want them kept and listed in the database?

Or is it trying to say they are 'duplicated' books? extra copies?

That doesn't seem to be right. I just checked a couple of them. I searched the library for them and it said they didn't exist. So I take it the search was on the database and that's why it came back zero.

But the 'maintenance' thing is telling me it is there in fact.

If they were duplicated then of course I'd want to delete them. Why'd it ever put them there? But it looks like they're not.

But if they are not and I now delete them then what a hell of a job (there's hundreds) going all over the multiple hard drive and folders looking for these (now) missing books.

wouldn't it make more sense for the system to simply record their presence? Put an entry in the database? Why can't it/doesn't it do that?

Have I misunderstood the whole thing? What to do?