OMG
A Necro post. Did you not see the warning
\
Do read the Calibre FAQ there are OS file system issues that will bite you.
BTW I have a similar rig. I treat Calibre (Linux) as a Read ONLY

(for Library Integrity sake) Use the Content server.


There is a Window REGISTRY tweak so Windows uses the same TIME (Clock) as Linux, which is another
ouch if not handled properly