I have on a Goclever GC-4335 Igo Primo 2 which have 2 Gb internal and a 2Gb SDcard.
Igo Primo with all content is bigger than 2Gb.
I want to put maps on internal storage, and buildings and POIs on the SDcard.
What i must to do in sys.txt?
By default, igo/amigo/primo looks for "extra" content on SD card in igo/content directory. Don't put anything on sys.txt (remove folders section) and just create igo folder on SD card and inside igo folder, create subfolder content. Inside igo/content, create subfolders for map, poi, building, etc., and put all corresponding content that won't fit in internal storage there.