I have a library of many hundreds of ebooks in various formats, in a directory and its subdirectories. There are some duplicates, usually because I've converted a book to another format and kept both versions.
EDIT:
1) The filenames for my existing books are a mess. For example, some are title author, some author title, some just title, some are in author subdirs, etc. Is there any way to get Calibre to identify books correctly, or am I looking at a lot of manual editing?
2) When trying to import all of my books, I got an error message about Calibre hanging, with the suggestion to try importing fewer books at once. Calibre left a few calibre-parallel threads running that I had to kill manually in process explorer.
Is the best course to delete Calibre's library (see theducks' response below) and restart with smaller imports?
3) What's the best way to import my library into Calibre without duplicates, or to eliminate duplicates following the import?
4) Would the best solution for duplicates be to import all, the use the find duplicates plug-in, once I've imported and cleaned things up?
https://www.mobileread.com/forums/sho...d.php?t=131017