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Old 02-10-2026, 12:01 PM   #4
gbm
Wizard
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Join Date: Jun 2010
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This is why you should always at least read the FAQ's.
https://manual.calibre-ebook.com/faq...rked-drive-nas

Quote:
Do not put your calibre library on a networked drive.

A filesystem is a complex beast. Most network filesystems lack various filesystem features that calibre uses. Some don’t support file locking, some don’t support hardlinking, some are just flaky. Additionally, calibre is a single user application, if you accidentally run two copies of calibre on the same networked library, bad things will happen. Finally, different OSes impose different limitations on filesystems, so if you share your networked drive across OSes, once again, bad things will happen.
Some advice from a retired Field Engineer NEVER PUT YOUR personal files on a cloud drive.

That said go to your one drive and copy you calibre library to local drive and point calibre to the local library, then run library maintenance.

https://manual.calibre-ebook.com/

bernie


Quote:
Originally Posted by GiuseppeB67 View Post
Hi everyone,

I think I made a critical mistake with my Calibre setup and now I'm in a panic. For convenience, I decided to store my entire Calibre library folder on Microsoft OneDrive, thinking it would be a good way to sync and back up my collection.

Today, I opened Calibre, and it's showing an empty library. The interface opens normally, but it finds zero books. The library manager still points to the OneDrive folder, but Calibre acts like it's empty.

I believe OneDrive's "Files On-Demand" feature or some sync conflict might be the culprit. The files seem to be in the cloud, but Calibre isn't recognizing them.

Has anyone else experienced this? What can I do to recover my library and fix this? I desperately need to get my books back and understand the correct way to set this up to avoid it in the future.

Thank you for any help you can offer!
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