root@OpenWrt:/# mount
rootfs on / type rootfs (rw)
/dev/root on /rom type ext2 (rw)
none on /proc type proc (rw)
none on /sys type sysfs (rw)
none on /tmp type tmpfs (rw,nosuid,nodev)
tmpfs on /dev type tmpfs (rw)
none on /dev/pts type devpts (rw)
/dev/mtdblock3 on /jffs type jffs2 (rw)
mini_fo:/jffs on / type mini_fo (rw)
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root@OpenWrt:/# df -h
Filesystem Size Used Available Use% Mounted on
/dev/mtdblock3 11.5M 672.0k 10.8M 6% /jffs
mini_fo:/jffs 4.6G 10.4M 4.3G 0% /
root@OpenWrt:/# dd if=/dev/zero of=/TEST.bin
root@OpenWrt:/# df -h
Filesystem Size Used Available Use% Mounted on
/dev/mtdblock3 11.5M 708.0k 10.8M 6% /jffs
mini_fo:/jffs 4.6G 10.4M 4.3G 0% /
root@OpenWrt:/#