From Just Solve the File Format Problem
Revision as of 19:51, 1 February 2019 by Jsummers
One of the ISO 9660 volume descriptors begins with the byte sequence
0x00 "CD001" 0x01 "EL TORITO SPECIFICATION".
For the usual ISO 9660 file format, the sequence will appear at offset 32768+2048×k, for some smallish value of k≥0.