[haertig]

I have been running Calibre on my Linux system. I just now realized that I am running a very old copy. I'm running a recent version of the Linux distro, but I guess the repos for applications is a bit outdated, at least for Calibre.

I am currently running Calibre version 2.55

The newest version available from the Calibre website is 3.9.0

That's quite a jump. I known my way around Linux, and would have no problem building from scratch, manually fixing dependencies, etc. So the method in which I install the newer version doesn't matter. Using a package, or compiling - doesn't matter to me.

However, my concern is that i'd like to keep all my existing metadata. I've done a lot of work setting tags, downloading book covers that I like, etc. I don't want to lose that. I assume I would lose it if I uninstall the existing 2.55 Calibre before installing the newer 3.9.0 version. Possibly not, but possibly so, therefore I don't want to chance it without researching the best upgrade path first.

Can I just install the newest Calibre over the top of my existing version 2.55? Usually this is OK with many applications, but some times big jumps in versions (like I need to do) can cause problems. Of course, my entire Calibre directory structure is backed up. Is that sufficient if a bare metal recovery ends up being required following some disaster? Or does Calibre place information in other places (besides the main Calibre directory structure) that I need to first identify and make sure that is backed up? I know the books themselves are safely backed up, but maybe not the metadata, depending on how/where Calibre stores that.

Thanks in advance!