diff --git a/board/myna-player-odyssey/scripts/rootfs_postimage.sh b/board/myna-player-odyssey/scripts/rootfs_postimage.sh
index f6507d6..2894d40 100755
--- a/board/myna-player-odyssey/scripts/rootfs_postimage.sh
+++ b/board/myna-player-odyssey/scripts/rootfs_postimage.sh
@@ -12,11 +12,20 @@
 	"${BINARIES_DIR}"/kernel
 
 # compress them into a tarball for rauc
+
 tar -cJf \
 	"${BINARIES_DIR}"/kernel.tar.xz \
 	-C "${BINARIES_DIR}"/kernel \
 	.
 
+# create a filesystem for the initial image containing them
+
+fallocate -l 8m \
+	"${BINARIES_DIR}"/kernel.ext4
+mkfs.ext4 -Fd \
+	"${BINARIES_DIR}"/kernel \
+	"${BINARIES_DIR}"/kernel.ext4
+
 # prepare for genimage
 cd "${BINARIES_DIR}"
 export GENIMAGE_TMP=${BR2_EXTERNAL_MynaPlayer_PATH}/board/myna-player-odyssey/utilities/genimage.tmp