Document: Creating JFFS2 filesystem image Copyright (c) 2007, Voipac Technologies a.s. Download latest root filesystem tar package and unpack it. bash$> wget http://voipac.com/downloads/pxa/270/dimm/bin/linux/rootfs-mini1.tar.gz bash$> tar xzfv rootfs-mini1.tar.gz Ensure to have installed mtd-tools package (includes mkfs.jffs2 binary). Use erase blok size 128kB (131072B). bash$> mkfs.jffs2 -d rootfs-mini1/ -e 131072 -o rootfs-mini1-jffs2.bin