ISO image

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File Format
Name ISO image
Ontology
Extension(s) .iso, .isoimg, .cdr
MIME Type(s) application/x-iso9660-image
LoCFDD fdd000348
PRONOM fmt/468

An ISO image is a file containing an image of an optical disc (CD, DVD, etc.), which can be stored and transferred on other media. It is an uncompressed image containing all the data on the CD. (However, audio CDs are unable to be stored in this format because of technical differences in that format; the DDP or CUE and BIN formats can be used instead.) It usually uses the ISO 9660 filesystem, but UDF may also be used.

Many operating systems permit "mounting" of an ISO file where it is treated as if it were a disk drive. Also, many archiving programs will open ISO files and let you extract the files contained within.

For details, refer to the article about the specific filesystem:

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