diff --git a/example/local-path/kustomization.yaml b/example/local-path/kustomization.yaml
index f3bd76d..b9139eb 100644
--- a/example/local-path/kustomization.yaml
+++ b/example/local-path/kustomization.yaml
@@ -13,9 +13,12 @@ patches:
     metadata:
       name: vmop-image-repository
     spec:
+      # Default is ReadOnlyMany
       accessModes:
       - ReadWriteOnce
       resources:
         requests:
+          # Default is 100Gi
           storage: 10Gi
+      # Default is to use the default storage class
       storageClassName: local-path
diff --git a/example/rook-ceph/Readme.md b/example/rook-ceph/Readme.md
index 13fbf81..1d2cfc6 100644
--- a/example/rook-ceph/Readme.md
+++ b/example/rook-ceph/Readme.md
@@ -7,8 +7,8 @@ kubectl apply -f https://github.com/mnlipp/VM-Operator/raw/main/deploy/crds/vms-
 ```
 
 Apart from that, the `kustomize.yaml` defines a namespace for the manager 
-(and the VMs managed by it) and patches the repository PVC to create
-a small volume using a ceph fs.
+(and the VMs managed by it) and applies patches to use `rook-cephfs` as
+storage class (instead of the default storage class).
 
 The `kustomize.yaml` does not include the test VM. Before creating
 the test VM, you will again most likely want to change the
diff --git a/example/rook-ceph/kustomization.yaml b/example/rook-ceph/kustomization.yaml
index 00b0b6e..495fe3c 100644
--- a/example/rook-ceph/kustomization.yaml
+++ b/example/rook-ceph/kustomization.yaml
@@ -7,15 +7,24 @@ resources:
 namespace: vmop-demo
 
 patches:
+# Use storage class rook-cephfs for the shared image repository
 - patch: |-
     kind: PersistentVolumeClaim
     apiVersion: v1
     metadata:
       name: vmop-image-repository
     spec:
-      accessModes:
-      - ReadOnlyMany
-      resources:
-        requests:
-          storage: 100Gi
       storageClassName: rook-cephfs
+
+# Use storage class rook-cepfs for the runner's data (e.g. EFI vars)
+- patch: |-
+    kind: ConfigMap
+    apiVersion: v1
+    metadata:
+      name: vm-operator
+    data:
+      config.yaml: |
+        "/Manager":
+          "/Controller":
+            runnerData:
+              storageClassName: rook-cephfs