Install 64 bit calibre--do not launch calibre.
Using file manger open calibre portable and find the folder Calibre Settings, copy the contents of Calibre Settings then paste into the folder C:\Users\yourusername\AppData\Roaming\calibre.
Answer yes when it asks if you want to replace files
Now copy your library to your C: drive open calibre and point to your library.
bernie
|