public static VirtualHardDisk Open(string filename,
            VirtualDiskAccessMasks accessMask = VirtualDiskAccessMasks.All,
            OpenVirtualDiskFlags flag = OpenVirtualDiskFlags.None, uint rwDepth = 0)
        {
            var storageType = new VirtualStorageType();

            var parameters = new OpenVirtualDiskParameters
            {
                Version = OpenVirtualDiskVersions.Version1,
                Version1 = new OpenVirtualDiskParametersVersion1 { RWDepth = rwDepth}
            };

            var handle = VirtualDiskCore.OpenVirtualDisk(storageType, filename, accessMask, flag, parameters);

            var vhd = new VirtualHardDisk(filename, handle);

            // ReSharper disable once InvertIf
            if (vhd.VirtualStorageType.DeviceId == VirtualStorageDeviceTypes.Iso)
            {
                vhd.Dispose();
                throw new NotSupportedException("This class does not support ISO files.");
            }

            return vhd;
        }
        public static VirtualHardDisk2 Open(string filename, OpenVirtualDiskFlags flag = OpenVirtualDiskFlags.None,
            bool getInfoOnly = false, bool readOnly = false, Guid resiliencyGuid = default(Guid))
        {
            var storageType = new VirtualStorageType();

            var parameters = new OpenVirtualDiskParameters
            {
                Version = OpenVirtualDiskVersions.Version2,
                Version2 =
                    new OpenVirtualDiskParametersVersion2
                    {
                        GetInfoOnly = getInfoOnly,
                        ReadOnly = readOnly,
                        ResiliencyGuid = resiliencyGuid
                    }
            };

            // When using OpenVirtulaDiskVersions.Version2, VirtualDiskAccessMasks *must* be set to None
            var handle = VirtualDiskCore.OpenVirtualDisk(storageType, filename, VirtualDiskAccessMasks.None, flag, parameters);

            var vhd = new VirtualHardDisk2(filename, handle);

            // ReSharper disable once InvertIf
            if (vhd.VirtualStorageType.DeviceId == VirtualStorageDeviceTypes.Iso)
            {
                vhd.Dispose();
                throw new NotSupportedException("This class does not support ISO files.");
            }

            return vhd;
        }