I am a Linux Ubuntu PRS-505 user and I mostly use calibre for some months now.

I had once to do a soft reset and I lost some meta-tags, collections and bookmarks though I lost no book.

The result was two or three hours to put things back in order.
I thought a little about it.
First, I decided to stop my PRS-505 once a day (before I was always in stand-by mode).

Then, I wonder if there are some maintenance operations I could perform. I was thinking of some kind of fsck (this is Linux).

And I think I could use rsync once in a while to backup my books.

Has somebody some experience about maintenance and backup ot a PRS-505 content ?

Well. It seems that backup and maintenance are not fashionable. The PRS is not a computer ?

Anyway, for the information of the few that could be interested, I use now very satisfactorily a tool called grsync on Ubuntu. It's a very convenient graphical synchronisation tool. So, once the files have been sent with the right format to the PRS using calibre, I delete them and only rely on my synchro (with checksum included).

Every minor modification is now kept. Including bookmarks, collections, tags, whatever...Synchro lasts some seconds. So it's just a reflex to acquire, you add some new books, you make a synchro. Peace of mind.

As far as the idea of fsck, since the PRS-505 uses a Linux kernel, it should be possible, using a live-cd like rescuecd, to fsck the files. Still mulling about it though.