SD init fail: What's wrong here?

Hey everyone,

I'm just trying to get my Prusa going via SD card. I got a Rumba board + standard arduino microSD breakout, connected to EXP1. The pins should fit up correctly.


In Repetier Host's configuration.h I set:

#define SDSUPPORT true

Whenever I try to mount the SD card in Repetier, I get this one:

22:18:18.319 : SD init fail
22:18:18.319 : Begin file list
22:18:18.329 : End file list
22:18:18.329 : Begin file list
22:18:18.329 : End file list

I tried a 2GB noname microSD card and a 16GB Samsung, both formatted to FAT32 and FAT16, nothing worked out.

What could I possibly do wrong? Is there anything I missed?