I found a serious problem when Calibre recently. All of my books had disappeared. The Calibre page was blank. I noticed a "rebuild data base" button on a pull down menu. 4 hours later about 3500 books appeared as normal including books I had read and deleted from the Caliber Library several months ago.
My 4600 books were still on my device (Sony Reater T1) with a data card installed. Since there were two new books I had downloaded but which I not placed into Calibre or the device I plugged by device into my laptop and put those two books in Calibre and then had them placed on my device. After which my device was 1000 books short.
The only saving grace is that all books I placed on Calibre are saved in a number of seperate files. But comparing one to the other and reinstalling 1000 books is not something I really want to have to do.
By the way, my Calibre Library appears in two places on my computer. One of them is in my main folder -- the one with My Documents, My Videos, etc. and the other on is in my Downloads folder. The main one may have all the books in it but they are arranged alphabetically in author folders and some of the folders are empty. The other one in the Downloads folder has only two files in in it -- 1. Metadata 127 KB and 2. metadata db prefs backup.json 13 KB.
To compare files, folders, and lists so as to reinstall will take weeks if not longer. Anyone have any shortcuts to offer? Please!
Also, I don't want this to happen again. Any ideas as to what caused it and how to prevent it in the future?
Thanks.
kligy@outlook.com