Originally Posted by theducks
No it does not normally happen for a standard PC configuration.
Someone was Changing folder or File names inside the Library?
Noooooooo. Never! I don't know from nothin' to be doing such.
Carefully, not changing anything you see: Peek inside the Library folder.
Is there a Author folder that Calibre does not show?
Is the a Title folder inside?
Is there any files inside(Normaly cover.jpg, metadata.opf, 1 or more book formats)
There are many, many like that.
Size: 59.8 GB
Size on Disc: 60.2 GB
184,572 Files, 79,250 Folders
There are 17,569 top level folders (for want of a better word) - the ones I see under CalibreBooks without opening anything up. But, again, only 36,556 total titles showing up in calibre.
Is the Library on a fixed (internal) drive?
A 500 GB external drive gifted to me. This is actually the second one I've used. Both probably have a lot o'miles on them. The first was giving me delayed write fail error messages so I switched to the current one. The day before this corruption event, I got:
calibre, version 0.9.14
ERROR: Unhandled exception: <b>DatabaseException</b>:disk I/O error
RemoteTraceback (most recent call last):
File "site-packages\calibre\library\sqlite.py", line 271, in run
File "site-packages\calibre\library\sqlite.py", line 166, in get
OperationalError: disk I/O error
So, maybe a drive problem like you said?
You have a rogue Anti-virus program (you should exclude your Library, the books would normally be checked before import)
I have been using Microsoft Security Essentials for anti-virus and Malwarebytes Anti-Malware uneventfully for the four months I've been running calibre.