Restore the Library folder in its entirety
FIRST
If you have added books to the existing Library, rename that folder.
Since you cant rename the current IN USE library with Calibre. QUIT Calibre and then use the OS to rename the folder (default is Calibre Library)
After you restore, you can re-link Calibre to the old ones new name:
Right click the Library icon: Create/Switch: USE EXISTING: <select the folder>
|