Sorry I didn't get back to you, but here goes: => mmc list rksdmmc@ff520000: 0 rksdmmc@ff500000: 1 (SD) => mmc info Device: rksdmmc@ff500000 Manufacturer ID: 3 OEM: 5344 Name: SL16G Tran Speed: 50000000 Rd Block Len: 512 SD version 3.0 High Capacity: Yes Capacity: 14.8 GiB Bus Width: 4-bit Erase Group Size: 512 Bytes => ls mmc 1 ** ext4fs_devread read error - block Failed to mount ext2 filesystem... ** Unrecognized filesystem type ** Now, to be completely clear, that SD card b