internal override void WriteTo(byte[] buffer, int offset)
        {
            base.WriteTo(buffer, offset);
            IsoUtilities.WriteA1Chars(buffer, offset + 8, 32, SystemIdentifier, CharacterEncoding);
            IsoUtilities.WriteString(buffer, offset + 40, 32, true, VolumeIdentifier, CharacterEncoding, true);
            IsoUtilities.ToBothFromUInt32(buffer, offset + 80, VolumeSpaceSize);
            IsoUtilities.EncodingToBytes(CharacterEncoding, buffer, offset + 88);
            IsoUtilities.ToBothFromUInt16(buffer, offset + 120, VolumeSetSize);
            IsoUtilities.ToBothFromUInt16(buffer, offset + 124, VolumeSequenceNumber);
            IsoUtilities.ToBothFromUInt16(buffer, offset + 128, LogicalBlockSize);
            IsoUtilities.ToBothFromUInt32(buffer, offset + 132, PathTableSize);
            IsoUtilities.ToBytesFromUInt32(buffer, offset + 140, TypeLPathTableLocation);
            IsoUtilities.ToBytesFromUInt32(buffer, offset + 144, OptionalTypeLPathTableLocation);
            IsoUtilities.ToBytesFromUInt32(buffer, offset + 148, Utilities.BitSwap(TypeMPathTableLocation));
            IsoUtilities.ToBytesFromUInt32(buffer, offset + 152, Utilities.BitSwap(OptionalTypeMPathTableLocation));
            RootDirectory.WriteTo(buffer, offset + 156, CharacterEncoding);
            IsoUtilities.WriteD1Chars(buffer, offset + 190, 129, VolumeSetIdentifier, CharacterEncoding);
            IsoUtilities.WriteA1Chars(buffer, offset + 318, 129, PublisherIdentifier, CharacterEncoding);
            IsoUtilities.WriteA1Chars(buffer, offset + 446, 129, DataPreparerIdentifier, CharacterEncoding);
            IsoUtilities.WriteA1Chars(buffer, offset + 574, 129, ApplicationIdentifier, CharacterEncoding);
            IsoUtilities.WriteD1Chars(buffer, offset + 702, 37, CopyrightFileIdentifier, CharacterEncoding); // FIXME!!
            IsoUtilities.WriteD1Chars(buffer, offset + 739, 37, AbstractFileIdentifier, CharacterEncoding);  // FIXME!!
            IsoUtilities.WriteD1Chars(buffer, offset + 776, 37, BibliographicFileIdentifier, CharacterEncoding);

            // FIXME!!
            IsoUtilities.ToVolumeDescriptorTimeFromUTC(buffer, offset + 813, CreationDateAndTime);
            IsoUtilities.ToVolumeDescriptorTimeFromUTC(buffer, offset + 830, ModificationDateAndTime);
            IsoUtilities.ToVolumeDescriptorTimeFromUTC(buffer, offset + 847, ExpirationDateAndTime);
            IsoUtilities.ToVolumeDescriptorTimeFromUTC(buffer, offset + 864, EffectiveDateAndTime);
            buffer[offset + 881] = FileStructureVersion;
        }