I've got an USB stick with two partitions: A FAT32 Partition named MULTIBOOT and an EXT2 Partition named OPTWARE. However, if I attach the stick to my router(ASUS RT-N16, TomatoUSB 1.28) only the MULTIBOOT partition is found in /mnt. Strangely yesterday OPTWARE was also found and I was able to install optware in there by mounting it to /opt. But when I attached the USB stick today it just wasn't found anymore.
Sorry for mistakes in my english, I'm not a native speaker.