Description: An ISO image is a file that contains an exact copy of a complete file system, which can include an operating system, applications, and data. This format is commonly used to create bootable media, such as CDs, DVDs, or USB drives, allowing users to install or run various operating systems from these devices. ISO images are particularly popular in the realm of software distribution, as they facilitate the distribution and installation of various operating systems and applications. Being a single file, an ISO image simplifies the download and storage process, allowing users to easily transfer the content to a physical medium. Additionally, ISO images can be mounted on modern operating systems, enabling access to their content without the need to burn them to a disc. This format has gained relevance in the digital age, where virtualization and the creation of test environments are increasingly common, allowing users to experiment with different software and operating systems without compromising their main installations.
History: The ISO 9660 format was developed in 1988 by the International Organization for Standardization (ISO) to standardize the file system structure on CD-ROMs. Over the years, this format has evolved, allowing for the inclusion of extensions like Joliet and Rock Ridge, which enhance compatibility and functionality. ISO images became popular with the rise of software distribution via CDs and later with the transition to USB media and virtualization.
Uses: ISO images are primarily used for the distribution of operating systems and software, allowing users to create installation media. They are also useful for backing up entire systems and for virtualization, where they can be mounted and run without the need for physical hardware.
Examples: A practical example is downloading an ISO image of a Linux distribution from its official website, which can then be burned to a USB drive to install the operating system. Another case is various lightweight Linux distributions, which provide efficient ISO images for users looking for fast operating systems.
