I ' m working on this too , but the question can just as easily be generalized to a search for syncing on linux . You have four folders to consider configs , roms , bios , and splashscreens . There are more , but those four contain your saves , scrapes , and config . Edit These are the default SMB shares by no coincidence I think . For my part I plan to have those four sync to my NAS via FTP . Sucker is too old to use other ways . An SD image is absolute of course , but I want something humming in the background to make sure my progress in advance wars is not lost even if I hose the system will an illadvised mistake on the command line . <| sep |> Nerdsync . Its 3 guys who ask great questions in relation to comic books . They cover philosophical topics as well as comic book movie and show reviews too . Really insightful and super funny guys .