GCN GameCube

[DarkCrudus]

is there a way to format an SD card and put it into an SD memorycard reader to work with the gamecube?

 

[Schizoanalysis]

SD Gecko...


But it is only used for homebrew, not game saves...

 

[SifJar]

There was an official Nintendo SD GC memory card, but AFAIK, it was only in Japan...

But I think there are guides online to make your own perhaps.

EDIT: Here's one guide, but doing it mean the memory card can't be used for saves anymore (only homebrew) : http://ngc.scorpei.com/GUIDE-SD_adapter.html

But according to that page, its possible to keep save functionality, so google about, see what you can find