diff --git a/pkg/config/cos.go b/pkg/config/cos.go
index 4b1a1b948..bae516c1d 100644
--- a/pkg/config/cos.go
+++ b/pkg/config/cos.go
@@ -796,7 +796,33 @@ func calcCosPersistentPartSize(diskSizeGiB uint64, partSize string) (uint64, err
 	return util.ByteToMi(size), nil
 }
 
-func CreateRootPartitioningLayout(elementalConfig *ElementalConfig, hvstConfig *HarvesterConfig) (*ElementalConfig, error) {
+func CreateRootPartitioningLayoutSeparateDataDisk(elementalConfig *ElementalConfig) *ElementalConfig {
+	elementalConfig.Install.Partitions = &ElementalDefaultPartition{
+		OEM: &ElementalPartition{
+			FilesystemLabel: "COS_OEM",
+			Size:            DefaultCosOemSizeMiB,
+			FS:              "ext4",
+		},
+		State: &ElementalPartition{
+			FilesystemLabel: "COS_STATE",
+			Size:            DefaultCosStateSizeMiB,
+			FS:              "ext4",
+		},
+		Recovery: &ElementalPartition{
+			FilesystemLabel: "COS_RECOVERY",
+			Size:            DefaultCosRecoverySizeMiB,
+			FS:              "ext4",
+		},
+		Persistent: &ElementalPartition{
+			FilesystemLabel: "COS_PERSISTENT",
+			Size:            0,
+			FS:              "ext4",
+		},
+	}
+	return elementalConfig
+}
+
+func CreateRootPartitioningLayoutSharedDataDisk(elementalConfig *ElementalConfig, hvstConfig *HarvesterConfig) (*ElementalConfig, error) {
 	diskSizeBytes, err := util.GetDiskSizeBytes(hvstConfig.Install.Device)
 	if err != nil {
 		return nil, err
diff --git a/pkg/console/util.go b/pkg/console/util.go
index 50171560d..ab10ea4ec 100644
--- a/pkg/console/util.go
+++ b/pkg/console/util.go
@@ -531,10 +531,12 @@ func doInstall(g *gocui.Gui, hvstConfig *config.HarvesterConfig, webhooks Render
 
 	if hvstConfig.ShouldCreateDataPartitionOnOsDisk() {
 		// Use custom layout (which also creates Longhorn partition) when needed
-		elementalConfig, err = config.CreateRootPartitioningLayout(elementalConfig, hvstConfig)
+		elementalConfig, err = config.CreateRootPartitioningLayoutSharedDataDisk(elementalConfig, hvstConfig)
 		if err != nil {
 			return err
 		}
+	} else {
+		elementalConfig = config.CreateRootPartitioningLayoutSeparateDataDisk(elementalConfig)
 	}
 
 	if hvstConfig.DataDisk != "" {