diff --git a/overlay.d/05core/usr/lib/dracut/modules.d/40ignition-ostree/coreos-inject-rootmap.service b/overlay.d/05core/usr/lib/dracut/modules.d/40ignition-ostree/coreos-inject-rootmap.service
new file mode 100644
index 0000000000..101a3c727c
--- /dev/null
+++ b/overlay.d/05core/usr/lib/dracut/modules.d/40ignition-ostree/coreos-inject-rootmap.service
@@ -0,0 +1,14 @@
+[Unit]
+Description=CoreOS Inject Rootmap
+# If root is specified, assume rootmap is already configured
+ConditionKernelCommandLine=!root
+OnFailure=emergency.target
+OnFailureJobMode=isolate
+
+After=ignition-files.service
+
+[Service]
+Type=oneshot
+ExecStart=/usr/bin/rdcore rootmap /sysroot --boot-device /dev/disk/by-label/boot
+RemainAfterExit=yes
+MountFlags=slave
diff --git a/overlay.d/05core/usr/lib/dracut/modules.d/40ignition-ostree/module-setup.sh b/overlay.d/05core/usr/lib/dracut/modules.d/40ignition-ostree/module-setup.sh
index 7f7d43892f..bd8f5228f4 100755
--- a/overlay.d/05core/usr/lib/dracut/modules.d/40ignition-ostree/module-setup.sh
+++ b/overlay.d/05core/usr/lib/dracut/modules.d/40ignition-ostree/module-setup.sh
@@ -3,7 +3,7 @@
 # ex: ts=8 sw=4 sts=4 et filetype=sh
 
 depends() {
-    echo ignition
+    echo ignition rdcore
 }
 
 install_ignition_unit() {
@@ -90,4 +90,6 @@ install() {
     inst_script "$moddir/coreos-growpart" /usr/libexec/coreos-growpart
 
     inst_script "$moddir/coreos-relabel" /usr/bin/coreos-relabel
+
+    install_ignition_unit coreos-inject-rootmap.service diskful
 }