[chaley]

Originally Posted by travger

Now I'm somewhat leery about just moving the library, I am fairly sure that some of the books I moved lacked some data or formats. Hence this post - if in the future I move x000 books, how can I be sure that not a single one has left anything behind.

This is a rather philosophical question.

What can be said is that calibre is not supposed to leave books/formats behind *that it knows about* when it moves a library. If it does leave such things behind, then there is a bug or permission problems on the file system.

Is there a guarantee of no bugs? No. Thus you cannot ever be certain. In fact, you can't be certain that tomorrow, calibre won't format your hard disk because gamma rays changed memory. That said, it is highly probable that calibre works well enough when moving libraries, and that it won't format your disk. Is that good enough?

I am not trying to be sarcastic. I just think that you aren't going to get the guarantees you are seemingly asking for.

Like, should 'check Library' window be empty when library is ok?

Depends on what you mean by 'ok'. That function tells you about 'things' that are in the library that calibre does not know about, and in the case of formats, things that should be in the library that aren't. Sometimes this is normal. For example, calibre2opds puts stuff into the library. MacOs fills it full of .DS_Store files/folders. Windows will drop little 'thumbs.db' files in some situations.

In other cases it is not normal. For example, finding extra formats would be strange. Finding authors or titles that calibre should know about (have not been deleted) would be strange. It is less strange (but still strange) to find authors or titles that should have been deleted, but weren't because of permission problems or having a format open in a viewer when the book was removed from calibre's database.

Only you can decide what is ok and what isn't.

BTW: nothing the checker reports should cause calibre to fail.

Can I correct things from there or is it just for info where the discrepancies are?

The function tells you things. It won't 'fix' anything, nor can you 'fix' things from there.

Then why all those clickable buttons in the bottom?

I don't understand this question. The buttons are there to do what they say. For example, if you change something (delete folders, add ignores, etc), you can push the run the check button to do it again. You can push the copy to clipboard button so you can preserve the report should you want to look around in calibre. Etc.

I confess that I have considered removing the 'Cancel' button because it does the same thing as 'Done', but that is a nit.