diff --git a/openapi/generated_openapi/zz_generated.openapi.go b/openapi/generated_openapi/zz_generated.openapi.go
index 42be4ecb332..90591e0cfac 100644
--- a/openapi/generated_openapi/zz_generated.openapi.go
+++ b/openapi/generated_openapi/zz_generated.openapi.go
@@ -50986,7 +50986,7 @@ func schema_openshift_api_operator_v1_MachineManagerSelector(ref common.Referenc
 				Properties: map[string]spec.Schema{
 					"mode": {
 						SchemaProps: spec.SchemaProps{
-							Description: "mode determines how machine managers will be selected for updates. Valid values are All and Partial. All means that every resource matched by the machine manager will be updated. Partial requires specified selector(s) and allows customisation of which resources matched by the machine manager will be updated.",
+							Description: "mode determines how machine managers will be selected for updates. Valid values are All and Partial. All means that every resource matched by the machine manager will be updated. Partial requires specified selector(s) and allows customisation of which resources matched by the machine manager will be updated. None means that every resource matched by the machine manager will not be updated.",
 							Default:     "",
 							Type:        []string{"string"},
 							Format:      "",
@@ -53434,6 +53434,7 @@ func schema_openshift_api_operator_v1_PartialSelector(ref common.ReferenceCallba
 						},
 					},
 				},
+				Required: []string{"machineResourceSelector"},
 			},
 		},
 		Dependencies: []string{
diff --git a/openapi/openapi.json b/openapi/openapi.json
index df02800b66a..5d39c3339c1 100644
--- a/openapi/openapi.json
+++ b/openapi/openapi.json
@@ -29738,7 +29738,7 @@
       ],
       "properties": {
         "mode": {
-          "description": "mode determines how machine managers will be selected for updates. Valid values are All and Partial. All means that every resource matched by the machine manager will be updated. Partial requires specified selector(s) and allows customisation of which resources matched by the machine manager will be updated.",
+          "description": "mode determines how machine managers will be selected for updates. Valid values are All and Partial. All means that every resource matched by the machine manager will be updated. Partial requires specified selector(s) and allows customisation of which resources matched by the machine manager will be updated. None means that every resource matched by the machine manager will not be updated.",
           "type": "string",
           "default": ""
         },
@@ -31169,6 +31169,9 @@
     "com.github.openshift.api.operator.v1.PartialSelector": {
       "description": "PartialSelector provides label selector(s) that can be used to match machine management resources.",
       "type": "object",
+      "required": [
+        "machineResourceSelector"
+      ],
       "properties": {
         "machineResourceSelector": {
           "description": "machineResourceSelector is a label selector that can be used to select machine resources like MachineSets.",
diff --git a/operator/v1/types_machineconfiguration.go b/operator/v1/types_machineconfiguration.go
index 8bd41eb69d7..cf17b69ecd3 100644
--- a/operator/v1/types_machineconfiguration.go
+++ b/operator/v1/types_machineconfiguration.go
@@ -152,8 +152,9 @@ type MachineManagerSelector struct {
 	// Valid values are All and Partial.
 	// All means that every resource matched by the machine manager will be updated.
 	// Partial requires specified selector(s) and allows customisation of which resources matched by the machine manager will be updated.
+	// None means that every resource matched by the machine manager will not be updated.
 	// +unionDiscriminator
-	// +kubebuilder:validation:Required
+	// +required
 	Mode MachineManagerSelectorMode `json:"mode"`
 
 	// partial provides label selector(s) that can be used to match machine management resources.
@@ -165,12 +166,12 @@ type MachineManagerSelector struct {
 // PartialSelector provides label selector(s) that can be used to match machine management resources.
 type PartialSelector struct {
 	// machineResourceSelector is a label selector that can be used to select machine resources like MachineSets.
-	// +kubebuilder:validation:Required
+	// +required
 	MachineResourceSelector *metav1.LabelSelector `json:"machineResourceSelector,omitempty"`
 }
 
 // MachineManagerSelectorMode is a string enum used in the MachineManagerSelector union discriminator.
-// +kubebuilder:validation:Enum:="All";"Partial"
+// +kubebuilder:validation:Enum:="All";"Partial";"None"
 type MachineManagerSelectorMode string
 
 const (
@@ -180,6 +181,9 @@ const (
 	// Partial represents a configuration mode that will register resources specified by the parent MachineManager only
 	// if they match with the label selector.
 	Partial MachineManagerSelectorMode = "Partial"
+
+	// None represents a configuration mode that excludes all resources specified by the parent MachineManager from boot image updates.
+	None MachineManagerSelectorMode = "None"
 )
 
 // MachineManagerManagedResourceType is a string enum used in the MachineManager type to describe the resource
diff --git a/operator/v1/zz_generated.crd-manifests/0000_80_machine-config_01_machineconfigurations.crd.yaml b/operator/v1/zz_generated.crd-manifests/0000_80_machine-config_01_machineconfigurations.crd.yaml
index 073cb45f3df..d66d3c367d2 100644
--- a/operator/v1/zz_generated.crd-manifests/0000_80_machine-config_01_machineconfigurations.crd.yaml
+++ b/operator/v1/zz_generated.crd-manifests/0000_80_machine-config_01_machineconfigurations.crd.yaml
@@ -116,9 +116,11 @@ spec:
                                 Valid values are All and Partial.
                                 All means that every resource matched by the machine manager will be updated.
                                 Partial requires specified selector(s) and allows customisation of which resources matched by the machine manager will be updated.
+                                None means that every resource matched by the machine manager will not be updated.
                               enum:
                               - All
                               - Partial
+                              - None
                               type: string
                             partial:
                               description: |-
diff --git a/operator/v1/zz_generated.featuregated-crd-manifests/machineconfigurations.operator.openshift.io/ManagedBootImages.yaml b/operator/v1/zz_generated.featuregated-crd-manifests/machineconfigurations.operator.openshift.io/ManagedBootImages.yaml
index 676ba0f4c47..56c37bfea45 100644
--- a/operator/v1/zz_generated.featuregated-crd-manifests/machineconfigurations.operator.openshift.io/ManagedBootImages.yaml
+++ b/operator/v1/zz_generated.featuregated-crd-manifests/machineconfigurations.operator.openshift.io/ManagedBootImages.yaml
@@ -117,9 +117,11 @@ spec:
                                 Valid values are All and Partial.
                                 All means that every resource matched by the machine manager will be updated.
                                 Partial requires specified selector(s) and allows customisation of which resources matched by the machine manager will be updated.
+                                None means that every resource matched by the machine manager will not be updated.
                               enum:
                               - All
                               - Partial
+                              - None
                               type: string
                             partial:
                               description: |-
diff --git a/operator/v1/zz_generated.swagger_doc_generated.go b/operator/v1/zz_generated.swagger_doc_generated.go
index ad42b120e34..7badcb432cd 100644
--- a/operator/v1/zz_generated.swagger_doc_generated.go
+++ b/operator/v1/zz_generated.swagger_doc_generated.go
@@ -1389,7 +1389,7 @@ func (MachineManager) SwaggerDoc() map[string]string {
 }
 
 var map_MachineManagerSelector = map[string]string{
-	"mode":    "mode determines how machine managers will be selected for updates. Valid values are All and Partial. All means that every resource matched by the machine manager will be updated. Partial requires specified selector(s) and allows customisation of which resources matched by the machine manager will be updated.",
+	"mode":    "mode determines how machine managers will be selected for updates. Valid values are All and Partial. All means that every resource matched by the machine manager will be updated. Partial requires specified selector(s) and allows customisation of which resources matched by the machine manager will be updated. None means that every resource matched by the machine manager will not be updated.",
 	"partial": "partial provides label selector(s) that can be used to match machine management resources. Only permitted when mode is set to \"Partial\".",
 }
 
diff --git a/payload-manifests/crds/0000_80_machine-config_01_machineconfigurations.crd.yaml b/payload-manifests/crds/0000_80_machine-config_01_machineconfigurations.crd.yaml
index 073cb45f3df..d66d3c367d2 100644
--- a/payload-manifests/crds/0000_80_machine-config_01_machineconfigurations.crd.yaml
+++ b/payload-manifests/crds/0000_80_machine-config_01_machineconfigurations.crd.yaml
@@ -116,9 +116,11 @@ spec:
                                 Valid values are All and Partial.
                                 All means that every resource matched by the machine manager will be updated.
                                 Partial requires specified selector(s) and allows customisation of which resources matched by the machine manager will be updated.
+                                None means that every resource matched by the machine manager will not be updated.
                               enum:
                               - All
                               - Partial
+                              - None
                               type: string
                             partial:
                               description: |-