diff --git a/headers/private/kernel/disk_device_manager/KDiskDevice.h b/headers/private/kernel/disk_device_manager/KDiskDevice.h
index b5ed7decf6..62f015a3a2 100644
--- a/headers/private/kernel/disk_device_manager/KDiskDevice.h
+++ b/headers/private/kernel/disk_device_manager/KDiskDevice.h
@@ -70,6 +70,8 @@ public:
 	void SetShadowOwner(team_id team);
 	team_id ShadowOwner() const;
 
+	virtual void WriteUserData(UserDataWriter &writer,
+		user_partition_data *data);
 	void WriteUserData(UserDataWriter &writer, bool shadow);
 
 	virtual void Dump(bool deep = true, int32 level = 0);
diff --git a/src/kernel/core/disk_device_manager/KDiskDevice.cpp b/src/kernel/core/disk_device_manager/KDiskDevice.cpp
index 154188f41d..90cda405a3 100644
--- a/src/kernel/core/disk_device_manager/KDiskDevice.cpp
+++ b/src/kernel/core/disk_device_manager/KDiskDevice.cpp
@@ -332,6 +332,13 @@ KDiskDevice::ShadowOwner() const
 	return fShadowOwner;
 }
 
+// WriteUserData
+void
+KDiskDevice::WriteUserData(UserDataWriter &writer, user_partition_data *data)
+{
+	return KPhysicalPartition::WriteUserData(writer, data);
+}
+
 // WriteUserData
 void
 KDiskDevice::WriteUserData(UserDataWriter &writer, bool shadow)