ISO image

An ISO image is an informal term for a disk image of an ISO 9660 file system. More loosely, it refers to any optical disk image, even a UDF image.

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As is typical for disk images, in addition to the data files that are contained in the ISO image, it also contains all the filesystem metadata (boot code, structures, and attributes). All of this information is contained in a single file. These properties make it an attractive alternative to physical media for the distribution of software which requires this additional information as it is simple to retrieve over the net.

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Some of the common uses include the distribution of operating systems, such as Linux or BSD systems, and LiveCDs.

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Most CD/DVD authoring utilities can deal with ISO images: Producing them either by copying the data from existing media or generating new ones from existing files, or using them to create a copy on physical media.

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Most operating systems (including Mac OS, BSD, Linux and Windows, with third-party tools) allow these images to be mounted as if they were physical discs, making them somewhat useful as a universal archive format.

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Console emulators, such as ePSXe, and many other emulators that read from CD, are able to run ISO/BIN (and other similar formats) instead of running directly from the CD drive. Better performance is achieved by running an ISO since there is no ?waiting for drive to be ready.?

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CD vs ISO (from emulation point of view)

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• CD

Pros

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Disk image: A disk image is a computer file containing the complete contents and structure of a data storage device. The term has been generalized to cover any such file, whether taken from an actual physical storage device or not....

ISO 9660: ISO 9660, a standard published by the International Organization for Standardization, defines a file system for CD-ROM media....

File system: : See Filing system for this term as it is used in libraries and offices...

ISO image related Images and Photos (experimental)

Image, The (DVD)	Charmed: Mirror Image (Paperback)	Charmed: Mirror Image (Paperback)	3-D Image Captor
Broken Image Necklace	Conceptual Image of Dancer	Public Image Ltd.: Greatest Hits So Far CD	Public Image Ltd.: Greatest Hits So Far CD
The Italian Image Seller	Image of Durga on Her Tiger India	Doctor Who: Image of the Fendahl (DVD)	Abstract Image Entitled Asteroids: A Celestial Design