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The comp.unix.shell posting by St?phane Chazelas also lists the following offsets:
type 32768 (1 byte)
id 32769 (5 bytes)
version 32774 (1 byte)
system_id 32776 (32 bytes)
volume_id 32808 (32 bytes)
volume_space_size 32848 (8 bytes)
escape_sequences 32856 (32 bytes)
volume_set_size 32888 (4 bytes)
volume_sequence_number 32892 (4 bytes)
logical_block_size 32896 (4 bytes)
path_table_size 32900 (8 bytes)
type_l_path_table 32908 (4 bytes)
opt_type_l_path_table 32912 (4 bytes)
type_m_path_table 32916 (4 bytes)
opt_type_m_path_table 32920 (4 bytes)
root_directory_record 32924 (34 bytes)
volume_set_id 32958 (128 bytes)
publisher_id 33086 (128 bytes)
preparer_id 33214 (128 bytes)
application_id 33342 (128 bytes)
copyright_file_id 33470 (37 bytes)
abstract_file_id 33507 (37 bytes)
bibliographic_file_id 33544 (37 bytes)
creation_date 33581 (17 bytes)
modification_date 33598 (17 bytes)
expiration_date 33615 (17 bytes)
effective_date 33632 (17 bytes)
file_structure_version 33649 (1 byte)
application_data 33651 (512 bytes)
"Vice versa xorriso is able to copy file objects out of ISO 9660 filesystems." -- http://www.gnu.org/software/xorriso/
You might want to check what file and directory names would be renamed or chopped if you create iso 9660 level 2 image out of them. Use this command to check first.