1255 ISO 9660 Disk Image File Aggregate ISO 9660 Disk Image File is a virtual image of optical disk, storing content and structure of an optical disc which can be transferred on the other media. This format specifically uses ISO 9660, a so-called original standard for file system for optical disc media, written by International Organization for Standardization (ISO) and considered an international technical standard available for many operating systems. A disk image is a uncompressed copy of the contents of a disk or a folder, it can facilitate certain types of backup and recovery strategies. Please see ID: fdd000348 from Library of Congress and other the links attached to this entry for further information. 1 Digital Preservation Department / The National Archives 25 Oct 2012 08/2023 (v.113)- Max-offset modified for the BOF signature to allow for more exact signature identification. Internally researched. 15 Aug 2023 fmt/468 PUID iso File extension toast File extension cdr File extension dmg File extension bin File extension 730 ISO Disk Image File BOF: CD001{1-16384}ÿCD001 with offset of (32700- 37700). Beginning at byte 32768, an ISO file will hold two-to-many volume descriptors, each of 2048 bytes and starting with '*CD001', where * represents the volume desciptor type as defined within the specification. 1 Absolute from BOF 32700 37700 4344303031{1-16384}FF4344303031 Has lower priority than 1603 Encase Image File/Expert Witness Compression File Has lower priority than 2585 UDF-ISO 9660 Bridge Disc Has lower priority than 2586 Apple Partition Map Disk Image Has lower priority than 2587 Apple Partition Map ISO 9660 Hybrid Has priority over 2589 Nero Burning ROM Image File Is subtype of 2584 UDF Disc Image