The default location of the Lightroom catalog is… Windows XP – [systemdrive]\Documents and Settings\[your username]\My Documents\My Pictures\Lightroom\Lightroom Catalog.lrcat Windows Vista – [systemdrive]\Users\[your username]\Pictures\Lightroom\Lightroom Catalog.lrcat Mac – [systemdrive]/Users/[your username]/Photos/Lightroom/Lightroom Catalog.lrcat The catalogs are now fully cross platform, and the catalog ?le extensions are: *.lrcat is version 1.1 onwards. *.lrdb was version 1.0. *.aglib was the early… Click to continue