diff --git a/Makefile b/Makefile
index c65bafb..2e95193 100644
--- a/Makefile
+++ b/Makefile
@@ -17,7 +17,7 @@ $(MAKEDIST_TARGET)-commontools: sysvinit util-linux module-init-tools \
     dosfstools man mbr iptables cups vim iputils sudo postplug xinetd less \
     reiserfsprogs ppp b43-tools mdadm usb-modeswitch \
     usbutils ftp telnet eject bluez lsof \
-    tcpdump pcmcia-utils xdg-utils unionfs_utils iproute $(MAKEDIST_TARGET)-firmwares \
+    tcpdump pcmcia-utils xdg-utils iproute $(MAKEDIST_TARGET)-firmwares \
     $(MAKEDIST_TARGET)-devel
 $(MAKEDIST_TARGET)-debug: strace valgrind gdb minicom openssh-server dhcpclient rpm iputils \
     openssh-clients diffutils Mesa-tools kbd mc openmamba-release
diff --git a/platforms/bootcd/post.inc.sh b/platforms/bootcd/post.inc.sh
index 6c1df01..63ac3ee 100644
--- a/platforms/bootcd/post.inc.sh
+++ b/platforms/bootcd/post.inc.sh
@@ -10,7 +10,7 @@ chroot $MOUNTDIR depmod -a ${KERNEL_MAJVER}${KERNEL_EXTRAVER}
 # make initramfs
 
 LANG=${LANGUAGE}_${COUNTRY} chroot $MOUNTDIR dracut \
-   --filesystems "ext3 ext4 unionfs squashfs isofs reiserfs" \
+   --filesystems "ext3 ext4 overlayfs squashfs isofs reiserfs" \
    --nomdadmconf --nolvmconf \
    /boot/initramfs-${KERNEL_MAJVER}${KERNEL_EXTRAVER}.img.gz \
    ${KERNEL_MAJVER}${KERNEL_EXTRAVER}
diff --git a/platforms/bootusb-test/initramfs-include.sh b/platforms/bootusb-test/initramfs-include.sh
deleted file mode 100644
index e21c324..0000000
--- a/platforms/bootusb-test/initramfs-include.sh
+++ /dev/null
@@ -1,96 +0,0 @@
-FOUND_ISO=
-#RAMSIZE=100000 -o "size=${RAMSIZE}k" 
-
-msg ":: Creating new root ramdisk (dinamic size=${RAMSIZE}k) on /dev/shm..."
-mkdir -p /flash /cdrom /squashfs ${NEWROOT}
-
-#
-# findiso(): looks for ISO9660 images stored in flash root
-#
-findiso(){
-   msg ":: Looking for openmamba ISO cdrom images"
-
-   # try removable devices only
-   for i in /flash/openmamba-*.iso; do
-         /bin/losetup /dev/loop0 $i
-         if mount -r -t iso9660 /dev/loop0 /cdrom >/dev/null 2>&1; then
-            if test -r /cdrom/rootfs.compressed; then
-               msg ":: Valid ISO image $i found..."
-               FOUND_ISO="$i"
-               return 0
-            fi
-            umount /cdrom
-         fi
-         /bin/losetup /dev/loop0
-   done
-   return 1
-}
-
-#/sbin/splash_util -c repaint ${splash_add} -t default --mesg="Looking for cdrom device" --progress="4444"
-
-while true; do
-   msg ":: root device is ${root}"
-   if ! mount -t ext3 ${root} /flash >/dev/null 2>&1; then
-      if ! mount -t ext2 ${root} /flash >/dev/null 2>&1; then
-         err ":: Unable to mount USB rootfs. Supported filesystems are ext2 and ext3."
-      fi
-   fi
-   findiso
-   if [ "$FOUND_ISO" ]; then
-#      /sbin/splash_util -c repaint ${splash_add} -t default --mesg="Mounting compressed filesystem" --progress="5555"
-       msg ":: Mounting compressed filesystem"
-       /bin/losetup /dev/loop1 /cdrom/rootfs.compressed
-       mount -r -t squashfs /dev/loop1 /squashfs
-
-      if [ "${unionfs}" != "off" -a  "${unionfs}" != "OFF" ]; then
-
-         [ "${unionfs}" = "reset" ] && {
-            msg ":: Resetting unionfs data in rwroot"
-            mkdir -p /flash/old
-            mv /flash/rwroot /flash/old/
-         }
-         msg ":: Mounting unionfs"
-         mkdir -p /flash/rwroot
-         mount -t unionfs -o dirs=/flash/rwroot=rw:/squashfs=ro unionfs ${NEWROOT}
-         mkdir -p ${NEWROOT}/squashfs ${NEWROOT}/flash ${NEWROOT}/cdrom
-         mount -n -o move /squashfs ${NEWROOT}/squashfs
-         mount -n -o move /flash ${NEWROOT}/flash
-         mount -n -o move /cdrom ${NEWROOT}/cdrom
-      else
-         msg ":: Creating directories and symlinks on ramdisk..."
-         /bin/mount -t tmpfs /dev/shm ${NEWROOT}
-         mkdir -p \
-            ${NEWROOT}/tmp ${NEWROOT}/proc ${NEWROOT}/sys \
-            ${NEWROOT}/initrd ${NEWROOT}/mnt ${NEWROOT}/media \
-            ${NEWROOT}/oldroot ${NEWROOT}/squashfs ${NEWROOT}/flash \
-            ${NEWROOT}/cdrom
-         mount -n -o move /squashfs ${NEWROOT}/squashfs
-         mount -n -o move /flash ${NEWROOT}/flash
-         mount -n -o move /cdrom ${NEWROOT}/cdrom
-         ln -s squashfs/bin ${NEWROOT}/bin
-         ln -s squashfs/boot ${NEWROOT}/boot
-         ln -s squashfs/lib ${NEWROOT}/lib
-         ln -s squashfs/opt ${NEWROOT}/opt
-         ln -s squashfs/sbin ${NEWROOT}/sbin
-         ln -s squashfs/srv ${NEWROOT}/srv
-         ln -s squashfs/usr ${NEWROOT}/usr
-
-         chroot ${NEWROOT} /bin/cp -a \
-             /squashfs/dev /squashfs/home /squashfs/var \
-             /squashfs/etc /squashfs/root /
-      fi
-
-      # Create empty utmp and wtmp
-      #:> ${NEWROOT}/var/run/utmp
-      #:> ${NEWROOT}/var/run/wtmp
-
-#      [ "${init}" ] || init=/sbin/init
-#      msg ":: Running init, runlevel:${runlevel}"
-#      exec run-init ${NEWROOT} ${init} ${runlevel}
-#      msg ":: Could not run init; opening a command prompt."
-#      /bin/sh.shared
-   else
-      msg ":: FATAL ERROR: could not find a valid ISO image."
-#      /bin/sh.shared
-   fi
-done
diff --git a/platforms/bootusb-test/post.inc.sh b/platforms/bootusb-test/post.inc.sh
index b502943..7241702 100644
--- a/platforms/bootusb-test/post.inc.sh
+++ b/platforms/bootusb-test/post.inc.sh
@@ -3,7 +3,7 @@
 chroot $MOUNTDIR depmod -a ${KERNEL_MAJVER}${KERNEL_EXTRAVER}
 
 LANG=${LANGUAGE}_${COUNTRY} chroot $MOUNTDIR dracut \
-   --filesystems "ext3 ext4 unionfs squashfs isofs reiserfs" \
+   --filesystems "ext3 ext4 overlayfs squashfs isofs reiserfs" \
    --nomdadmconf --nolvmconf \
    /boot/initramfs-${KERNEL_MAJVER}${KERNEL_EXTRAVER}.img.gz \
    ${KERNEL_MAJVER}${KERNEL_EXTRAVER}
diff --git a/platforms/bootusb/post.inc.sh b/platforms/bootusb/post.inc.sh
index a246896..4fbea36 100644
--- a/platforms/bootusb/post.inc.sh
+++ b/platforms/bootusb/post.inc.sh
@@ -2,7 +2,7 @@
 for K in $KERNEL_EXTRAVER $KERNEL_MORE_EXTRAVER; do
    chroot $MOUNTDIR depmod -a ${KERNEL_MAJVER}${K}
    LANG=${LANGUAGE}_${COUNTRY} chroot $MOUNTDIR dracut \
-      --filesystems "ext3 ext4 unionfs squashfs isofs reiserfs" \
+      --filesystems "ext3 ext4 overlayfs squashfs isofs reiserfs" \
       --nomdadmconf --nolvmconf \
       /boot/initramfs-${KERNEL_MAJVER}${K}.img.gz \
       ${KERNEL_MAJVER}${K}
diff --git a/platforms/flash-1GB/post.inc.sh b/platforms/flash-1GB/post.inc.sh
index 5d6620d..2a0ce51 100644
--- a/platforms/flash-1GB/post.inc.sh
+++ b/platforms/flash-1GB/post.inc.sh
@@ -14,7 +14,7 @@ sed -i '/^[4-6]:.*/d' $MOUNTDIR/etc/inittab
 chroot $MOUNTDIR depmod -a
 
 LANG=${LANGUAGE}_${COUNTRY} chroot $MOUNTDIR dracut \
-   --filesystems "ext3 ext4 unionfs squashfs isofs reiserfs" \
+   --filesystems "ext3 ext4 overlayfs squashfs isofs reiserfs" \
    --nomdadmconf --nolvmconf \
    /boot/initramfs-${KERNEL_MAJVER}${KERNEL_EXTRAVER}.img.gz \
    ${KERNEL_MAJVER}${KERNEL_EXTRAVER}
diff --git a/platforms/flash-512MB/post.inc.sh b/platforms/flash-512MB/post.inc.sh
index 76fefb3..e5980ba 100644
--- a/platforms/flash-512MB/post.inc.sh
+++ b/platforms/flash-512MB/post.inc.sh
@@ -13,7 +13,7 @@ sed -i '/^[4-6]:.*/d' $MOUNTDIR/etc/inittab
 # make initramfs
 
 LANG=${LANGUAGE}_${COUNTRY} chroot $MOUNTDIR dracut \
-   --filesystems "ext3 ext4 unionfs squashfs isofs reiserfs" \
+   --filesystems "ext3 ext4 overlayfs squashfs isofs reiserfs" \
    --nomdadmconf --nolvmconf \
    /boot/initramfs-${KERNEL_MAJVER}${KERNEL_EXTRAVER}.img.gz \
    ${KERNEL_MAJVER}${KERNEL_EXTRAVER}
diff --git a/platforms/flash-server/post.inc.sh b/platforms/flash-server/post.inc.sh
index 00096c0..754fa94 100644
--- a/platforms/flash-server/post.inc.sh
+++ b/platforms/flash-server/post.inc.sh
@@ -6,7 +6,7 @@
 # make initramfs
 
 LANG=${LANGUAGE}_${COUNTRY} chroot $MOUNTDIR dracut \
-   --filesystems "ext3 ext4 unionfs squashfs isofs reiserfs" \
+   --filesystems "ext3 ext4 overlayfs squashfs isofs reiserfs" \
    --nomdadmconf --nolvmconf \
    /boot/initramfs-${KERNEL_MAJVER}${KERNEL_EXTRAVER}.img.gz \
    ${KERNEL_MAJVER}${KERNEL_EXTRAVER}
diff --git a/platforms/installdvd/post.inc.sh b/platforms/installdvd/post.inc.sh
index 9cf0e56..bde63cf 100644
--- a/platforms/installdvd/post.inc.sh
+++ b/platforms/installdvd/post.inc.sh
@@ -10,7 +10,7 @@
 chroot $MOUNTDIR depmod -a ${KERNEL_MAJVER}${KERNEL_EXTRAVER}
 
 LANG=${LANGUAGE}_${COUNTRY} chroot $MOUNTDIR dracut \
-   --filesystems "ext3 ext4 unionfs squashfs isofs reiserfs" \
+   --filesystems "ext3 ext4 overlayfs squashfs isofs reiserfs" \
    --nomdadmconf --nolvmconf \
    /boot/initramfs-${KERNEL_MAJVER}${KERNEL_EXTRAVER}.img.gz \
    ${KERNEL_MAJVER}${KERNEL_EXTRAVER}
diff --git a/platforms/livecd/post.inc.sh b/platforms/livecd/post.inc.sh
index ee88ffe..93d4393 100644
--- a/platforms/livecd/post.inc.sh
+++ b/platforms/livecd/post.inc.sh
@@ -11,7 +11,7 @@ ISOID=
 for K in $KERNEL_EXTRAVER $KERNEL_MORE_EXTRAVER; do
    chroot $MOUNTDIR depmod -a ${KERNEL_MAJVER}${K}
    LANG=${LANGUAGE}_${COUNTRY} chroot $MOUNTDIR dracut \
-      --filesystems "ext3 ext4 unionfs squashfs isofs reiserfs" \
+      --filesystems "ext3 ext4 overlayfs squashfs isofs reiserfs" \
       --nomdadmconf --nolvmconf \
       /boot/initramfs-${KERNEL_MAJVER}${K}.img.gz \
       ${KERNEL_MAJVER}${K}
diff --git a/platforms/livedvd/post.inc.sh b/platforms/livedvd/post.inc.sh
index ee88ffe..93d4393 100644
--- a/platforms/livedvd/post.inc.sh
+++ b/platforms/livedvd/post.inc.sh
@@ -11,7 +11,7 @@ ISOID=
 for K in $KERNEL_EXTRAVER $KERNEL_MORE_EXTRAVER; do
    chroot $MOUNTDIR depmod -a ${KERNEL_MAJVER}${K}
    LANG=${LANGUAGE}_${COUNTRY} chroot $MOUNTDIR dracut \
-      --filesystems "ext3 ext4 unionfs squashfs isofs reiserfs" \
+      --filesystems "ext3 ext4 overlayfs squashfs isofs reiserfs" \
       --nomdadmconf --nolvmconf \
       /boot/initramfs-${KERNEL_MAJVER}${K}.img.gz \
       ${KERNEL_MAJVER}${K}
diff --git a/platforms/sdk-root/Makefile b/platforms/sdk-root/Makefile
index a34c5d8..779f0db 100644
--- a/platforms/sdk-root/Makefile
+++ b/platforms/sdk-root/Makefile
@@ -15,7 +15,7 @@ $(MAKEDIST_TARGET)-sdk-root: openssh-server usbutils wireless_tools parted \
             tightvnc-server lxde midori $(MAKEDIST_TARGET)-devel icecc
 $(MAKEDIST_TARGET)-sdk-root-missing: wpa_supplicant dosfstools cups vim postplug ipw2100-firmware ipw2200-firmware zd1211-firmware \
             rt2501-firmware rt2870-firmware b43-tools r5u87x-firmware mdadm \
-            ndiswrapper slmodem unionfs_utils nfs-utils mbr
+            ndiswrapper slmodem nfs-utils mbr
 $(MAKEDIST_TARGET)-sdk-root-en:
 $(MAKEDIST_TARGET)-sdk-root-it:
 $(MAKEDIST_TARGET)-sdk-root-es:
diff --git a/platforms/testcd/post.inc.sh b/platforms/testcd/post.inc.sh
index ee88ffe..93d4393 100644
--- a/platforms/testcd/post.inc.sh
+++ b/platforms/testcd/post.inc.sh
@@ -11,7 +11,7 @@ ISOID=
 for K in $KERNEL_EXTRAVER $KERNEL_MORE_EXTRAVER; do
    chroot $MOUNTDIR depmod -a ${KERNEL_MAJVER}${K}
    LANG=${LANGUAGE}_${COUNTRY} chroot $MOUNTDIR dracut \
-      --filesystems "ext3 ext4 unionfs squashfs isofs reiserfs" \
+      --filesystems "ext3 ext4 overlayfs squashfs isofs reiserfs" \
       --nomdadmconf --nolvmconf \
       /boot/initramfs-${KERNEL_MAJVER}${K}.img.gz \
       ${KERNEL_MAJVER}${K}
diff --git a/platforms/virtualserver/post.inc.sh b/platforms/virtualserver/post.inc.sh
index 2177e05..7e7aa4d 100644
--- a/platforms/virtualserver/post.inc.sh
+++ b/platforms/virtualserver/post.inc.sh
@@ -6,7 +6,7 @@
 # make initramfs
 
 LANG=${LANGUAGE}_${COUNTRY} chroot $MOUNTDIR dracut \
-   --filesystems "ext3 ext4 unionfs squashfs isofs reiserfs" \
+   --filesystems "ext3 ext4 overlayfs squashfs isofs reiserfs" \
    --nomdadmconf --nolvmconf \
    /boot/initramfs-${KERNEL_MAJVER}${KERNEL_EXTRAVER}.img.gz \
    ${KERNEL_MAJVER}${KERNEL_EXTRAVER}