Quote:
Originally Posted by zin
The metadata.db file is about 100k.
Is there any method to restore the database?
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If you have a backup of the metadata.db file then exit/quit calibre and restore it and you should be fine.
Quote:
Originally Posted by zin
If the answer is no, is there any easy way to re-add all my books? I didn't have much metadata entered but I did have cover pictures for most books.
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If you have no backup of the metadata.db file create an
empty library at a new location using the library icon on the top row of calibre.
Once this library is created click on the drop down arrow next to the Add Books icon (top left) select
Adding books from directories, including sub directories (one book per directory, assumes every ebook file is the same book in a different format) now select the directory you previously used for your library and wait until it finishes adding those books to this library.
Since the much of the metadata was kept in the metadata.db file some of the metadata maybe lost, but the books and covers should all be added.