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Originally Posted by Mr.Abiff
I searched the drive and the stated location of the Library (C:\Users\UserName\Calibre Calibre) was completely empty - not even the new entry showed. I then checked the Recycle Bin but that was empty also. Next, I searched for "metadata.db" over the entire disk but nothing was found by that name. I figured that if the Library had been moved, at least the metadata file would show up on a search. No joy there.
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If you searched the entire C drive and did not find a metadata.db file then your library resides on a different drive. We know for a fact that 1 metadata.db exists somewhere because you opened up calibre and added a single book. This 1 book library obviously does not reside on the C: drive.
Do as Divingduck suggests and search all drives for the actual books.*.epub, *.azw3 or *.pdf and see where the actual library resides.
Quote:
Originally Posted by Mr.Abiff
At the time of updating Calibre, I was running Beyond Compare on two other drives in the computer but that had no reference to the C: drive where Calibre resides.
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From what you say above it seems that only the calibre program resides on the C: drive. The actual library resides elsewhere or the metadata.db file for the 1 book library would have shown up on your search of the C: drive. It is possible you sync'd your library out of existence, but we won't know that until you do a search for your books. Does Beyond Compare have some sort of undo feature?
Quote:
Originally Posted by Mr.Abiff
Yes, I know that I had ignored what I tell everyone else to do "backup backup backup" but that doesn't help at this point. I had updated Calibre many times over the past two years and never experienced anything like this.
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Unfortunately calibre update didn't do this to your library. The metadata.db file is what holds all of the information you see in calibre. If this file disappears or gets corrupted in makes it look as if your library has disappeared. If you can find the folder structure of the library with the books inside the folders then you can restore your metadata.db file. Let us know if you find the actual books.