Hi Patrick, on MacOS you can use JaVaWa MapConverter: http://www.javawa.nl/mapconverter_en.html
On both, Linux and MacOS, you can install wine and use many of Garmin's programs for Windows, including MapConverter.
-- Best regards, Andrzej _______________________________________________ mkgmap-dev mailing list mkgmap-dev@lists.mkgmap.org.uk http://www.mkgmap.org.uk/mailman/listinfo/mkgmap-dev