diff --git a/libfstools/extroot.c b/libfstools/extroot.c
index 418df94..bbb0a3a 100644
--- a/libfstools/extroot.c
+++ b/libfstools/extroot.c
@@ -22,6 +22,7 @@
 #include <libgen.h>
 
 #include "libfstools.h"
+#include "volume.h"
 
 char const *extroot_prefix = NULL;
 
@@ -104,7 +105,7 @@ int mount_extroot(void)
 				if (mount_move("/tmp/extroot", "", "/overlay")) {
 					ULOG_ERR("moving extroot failed - continue normal boot\n");
 					umount("/tmp/extroot/overlay");
-				} else if (fopivot("/overlay", "/rom")) {
+				} else if (fopivot_multi("/overlay", "/rom")) {
 					ULOG_ERR("switching to extroot failed - continue normal boot\n");
 					umount("/overlay");
 				} else {
@@ -119,3 +120,65 @@ int mount_extroot(void)
 	}
 	return -1;
 }
+
+int fopivot_multi(char *rw_root, char *ro_root)
+{
+	if (mount_internal_overlay()) {
+		ULOG_ERR("mounting /tmp/overlay failed\n");
+	} else if (mkdir("/overlay/internal", 0755)) {
+		ULOG_ERR("failed to mkdir /overlay/internal: %m\n");
+	} else if (mount_move("/tmp/overlay", "/overlay/internal", "")) {
+		umount("/tmp/overlay");
+	} else if (mfopivot(rw_root, ro_root, "/overlay/internal/upper")) {
+		umount("/overlay/internal");
+	} else {
+		return 0;
+	}
+	return -1;
+}
+
+int mount_internal_overlay()
+{
+	struct volume *v = volume_find("rootfs_data");
+
+	if (!v)
+		return -1;
+
+	volume_init(v);
+	char *mp;
+	mp = find_mount_point(v->blk, 0);
+	if (mp) {
+		ULOG_ERR("rootfs_data:%s is already mounted as %s\n", v->blk, mp);
+		return -1;
+	}
+
+	char *fstype;
+	switch (volume_identify(v)) {
+		case FS_EXT4:
+			fstype = "ext4";
+			break;
+		case FS_F2FS:
+			fstype = "f2fs";
+			break;
+		case FS_UBIFS:
+			fstype = "ubifs";
+			break;
+		case FS_JFFS2:
+		default:
+			fstype = "jffs2";
+			break;
+	}
+
+	if (mkdir("/tmp/overlay", 0755)) {
+		ULOG_ERR("failed to mkdir /tmp/overlay: %m\n");
+		return -1;
+	}
+
+	if (mount(v->blk, "/tmp/overlay", fstype, MS_NOATIME | MS_RDONLY, NULL)) {
+		ULOG_ERR("failed to mount -t %s %s /tmp/overlay: %m\n", fstype, v->blk);
+		return -1;
+	}
+
+	return 0;
+}
+
diff --git a/libfstools/libfstools.h b/libfstools/libfstools.h
index f27307a..8c740a4 100644
--- a/libfstools/libfstools.h
+++ b/libfstools/libfstools.h
@@ -46,6 +46,9 @@ extern int mount_overlay(struct volume *v);
 extern int mount_move(const char *oldroot, const char *newroot, const char *dir);
 extern int pivot(char *new, char *old);
 extern int fopivot(char *rw_root, char *ro_root);
+extern int mfopivot(char *rw_root, char *ro_lowerlevel0, char *ro_lowerlevel1);
+extern int fopivot_multi(char *rw_root, char *ro_root);
+extern int mount_internal_overlay();
 extern int ramoverlay(void);
 
 extern int find_overlay_mount(char *overlay);
diff --git a/libfstools/mount.c b/libfstools/mount.c
index c7f2789..bb82390 100644
--- a/libfstools/mount.c
+++ b/libfstools/mount.c
@@ -94,7 +94,20 @@ pivot(char *new, char *old)
 int
 fopivot(char *rw_root, char *ro_root)
 {
-	char overlay[64], mount_options[64];
+	return mfopivot(rw_root, ro_root, NULL);
+}
+
+/**
+ * fopivot - switch to overlay using passed dir as upper one
+ *
+ * @rw_root: writable directory that will be used as upper dir
+ * @ro_root: directory where old root will be put 
+ * @ro_lowerlevel1: directory where internal overlay will be put
+ */
+int
+mfopivot(char *rw_root, char *ro_root, char *ro_lowerlevel1)
+{
+	char overlay[64], mount_options[128];
 
 	if (find_filesystem("overlay")) {
 		ULOG_ERR("BUG: no suitable fs found\n");
@@ -110,15 +123,21 @@ fopivot(char *rw_root, char *ro_root)
 	 */
 	snprintf(mount_options, sizeof(mount_options), "lowerdir=/,upperdir=%s", rw_root);
 	if (mount(overlay, "/mnt", "overlayfs", MS_NOATIME, mount_options)) {
-		char upperdir[64], workdir[64], upgrade[64], upgrade_dest[64];
+		char upperdir[64], workdir[64], upgrade[64], upgrade_dest[64], lowerdir[64];
 		struct stat st;
 
 		snprintf(upperdir, sizeof(upperdir), "%s/upper", rw_root);
 		snprintf(workdir, sizeof(workdir), "%s/work", rw_root);
 		snprintf(upgrade, sizeof(upgrade), "%s/sysupgrade.tgz", rw_root);
 		snprintf(upgrade_dest, sizeof(upgrade_dest), "%s/sysupgrade.tgz", upperdir);
-		snprintf(mount_options, sizeof(mount_options), "lowerdir=/,upperdir=%s,workdir=%s",
-			 upperdir, workdir);
+
+		if (ro_lowerlevel1)
+			snprintf(lowerdir, sizeof(lowerdir), "%s:/", ro_lowerlevel1);
+		else
+			snprintf(lowerdir, sizeof(lowerdir), "/");
+
+		snprintf(mount_options, sizeof(mount_options), "lowerdir=%s,upperdir=%s,workdir=%s",
+			lowerdir, upperdir, workdir);
 
 		/*
 		 * Overlay FS v23 and later requires both a upper and
