Use Switch Library>Switch/create library...>Use the previously existing library at the new location and fill out the path to the library database (metadata.db file). You can type it in or browse to it, using the little computer icon.
Once you do that, calibre will use that library until you tell it otherwise. It will not merge your various libraries together using this function. Post back if you want instructions to merge the libraries.
BTW, Switch Library is the bookshelf icon on calibre's main menu.
Last edited by Sabardeyn; 10-04-2013 at 01:06 PM.
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