syncing sd without device

Hi to all

I'm using an ebook reader with an sd card on wich I just put files of any type to read them randomly (mainly pdfs and djvus or part of them).

I use Calibre to organize my library for non-random-to-read files.

The files managed with Calibre are on that sd too

I'd like to sync the files between Calibre and the sd card without having the reader attached to the pc.

I use save to disk to do that, but the syncing is left to my eyes.

On other words, I dont attach the device to the pc, i just unplug the sd card from the ebook reader, I plug it into an sd card reader and I plug this one in the pc. So I'd like that Calibre sees the sd like a device and syncs with it.


thanks for any clou

paolo