[BetterRed]

@crescere - a calibre library has two main components the author/book folders which are the equivalent of library shelves, and a database (metadata.db), the equivalent of a library catalogue. It is the latter that is the heart and soul of calibre.

When you tag your books, correct author name, rate a book etc the database is updated automatically - you don't have to save it as such.

You would transfer the entire library(ies) folder to a new computer. If you were changing your operating system at the same time I would suggest you post a question here seeking advise in moving from your current OS to a new one. I'm thinking of a change say from Apple OS/X to Ubuntu Linux, not a new version of the same operating system.

There is another set of data which is called the configuration or settings data. The location varies depending on which operating system you use. It can be accessed via Preferences->Miscellaneous>Open calibre configuration directory. You'd probably want to also move it to a new computer.

BR