Quote:
Originally Posted by BetterRed
Assume all the books in a library only have one format - lets say ePUB.
Select all books, now select Remove Books->Remove files of a specific format from selected books, select ePUB, select OK - result all ePUBs gone. The author and book folder would remain as is with their cover.jpg and metadata.opf files intact, and the metadata.db file would also remain as it was (with the 'formats' column updated).
If I wanted to do it on Windows, I would do a ctrl/a (select all books), ctrl/alt/r (get the Remove files of... dialogue, space to select ePUB, enter to perform action.
I can't recall if calibre has an option to do hard deletes rather than soft deletes, but if it does and it was set then the ePUBs would be gone 'forever'.
BR
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OK. Thanks. Since the sub-folders are all gone, as well as the .ePub files, I don't believe this can be the explanation.