c# 无法获取 VMware 虚拟机的硬盘 ID

如题： c# 无法获取 VMware 虚拟机的硬盘 ID

这个得怎么处理？

public static string GetDiskID()
        {
            try
            {
                String HDid = "";
                ManagementClass mc = new ManagementClass("Win32_DiskDrive");
                ManagementObjectCollection moc = mc.GetInstances();
                foreach (ManagementObject mo in moc)
                {
                    HDid = (string)mo.Properties["SerialNumber"].Value;
                }
                moc = null;
                mc = null;

                //string[] arr = Regex.Split(HDid, " ", RegexOptions.IgnoreCase);

                return HDid.ToString().Trim();
            }
            catch
            {
                return "unknow";
            }
            finally
            {


            }

        }