Originally Posted by Adoby
Calibre will MOVE the books to the new library. If you delete them, they are gone. POFF!
Copy the folder Calibre Library. The copy may be named "Calibre Library (copy)".
Then create a new shortcut for calibre, using this command:
calibre --with-library="Calibre Library (copy)"
Start Calibre using the new shortcut and verify in Preferences that you are using the copy.
Edit: Updated to 0.7.9 and the Preferences setting for the library is gone... Good!
I'm using Calibre 0.6.38, and the scheme I posted has worked flawlessly. Calibre simply made a copy of my library when I change the preference setting to a different library. Of course, copying it first will be safer if you are not sure. In fact I have three library now and they all work flawlessly.
My feeling is that in this version (0.6.38) at least whenever a library is given Calibre will check to see whether it has a database file. If it doesn't, it will copy all books into the new library. If it already has one, it will just open what is already in there.