mmc

1. after insert the sd card, you can find the device in
   /dev/block folder,example mmcblk0p1 ,mmcblk0p2 ...
   
2. mount -t vfat /dev/block/mmcblk0p1 /data/mnt/p1
   mount -t ext3 /dev/block/mmcblk0p2 /data/mnt/p2