http://ecco.selfip.net/gargoyle-pl/ar71xx/openwrt-ar71xx-tl-mr3420-v1-squashfs-factory.bin

http://eko.one.pl/?p=openwrt-externalroot

root@Gargoyle:~$ df -h
Filesystem                Size      Used Available Use% Mounted on
/dev/root                 2.4M      2.4M         0 100% /rom
tmpfs                    14.5M     80.0K     14.4M   1% /tmp
tmpfs                   512.0K      4.0K    508.0K   1% /dev
/dev/mtdblock3          320.0K    244.0K     76.0K  76% /overlay
/dev/sda1                98.7M      1.3M     92.4M   1% /tmp/overlay-disabled
mini_fo:/overlay          2.4M      2.4M         0 100% /

root@Gargoyle:/etc$ uci show fstab
fstab.automount=global
fstab.automount.from_fstab=1
fstab.automount.anon_mount=1
fstab.autoswap=global
fstab.autoswap.from_fstab=1
fstab.autoswap.anon_swap=0
fstab.@mount[0]=mount
fstab.@mount[0].fstype=ext2
fstab.@mount[0].options=rw,noatime
fstab.@mount[0].enabled_fsck=0
fstab.@mount[0].device=/dev/sda1
fstab.@mount[0].enabled=1
fstab.@mount[0].is_rootfs=1
fstab.@swap[0]=swap
fstab.@swap[0].device=/dev/sda98
fstab.@swap[0].enabled=0