subject: Understanding And Using Iso Files [print this page] Unlike most other file extensions, ISO files bear a name that has little to do with their content. ISO is the acronym for the International Organization for Standardization. The actual contents of an ISO file can be of several different types. Essentially, one can think of an ISO as a snapshot of a CD-ROM. The format is convenient for distributing information that was contained on CD-ROMS as it allows the original file structure to be preserved and allows for additional information, such as boot information, to be contained with the file in a readily-usable format.
ISO files are properly referred to as images and most users on any messaging technology will understand the terms "disc image" and ISO file to be interchangeable. To use ISO files, one must either mount the image or burn the image to a disc. Anyone who has used Linux or UNIX systems will be familiar with the process of mounting a device and what that term means. In fact, the users of any system mount media, though they usually know the process as simply opening or exploring a disc. The mounting of ISOs is done using third-party software.
To mount an ISO, one installs a program which allows for the creation of virtual drives on one's computer. These programs are widely available for free. The program adds a fictional hardware device to the computer's system and the user can mount the ISO file which it allows it to function as a normal CD-ROM. It's a bit intimidating from a technical standpoint at first but, once one actually makes the attempt, this process reveals itself to be very easy and quite intuitive. Best of all, these programs can create multiple virtual drives which allows many images to be mounted.
ISO files are usually burned to a CD-ROM for storage and general use. In fact, this format is essentially designed to allow for the easy transfer of a CD online, with all the contents in the original file structure found on the original. This requires a third-party burning software specifically built for the task. Using the included burning interface in an operating system will not burn an ISO image correctly to a disc. It will copy the files, but any information used at boot or other information that is to be handled in a specific manner by the computer will fail to operate as intended.
Programs for handling ISO files are generally free. Some of them work right from a newsreader's interface and some of them function as separate add-ons. Files which include multi-track data such as video and audio CD's cannot be stored or transferred in this manner. Most often, this file type is used for transferring entire programs which need to be installed or run from a physical CD. A mounted image can take the place of that physical CD during regular operation but, for CD's that need to run at boot, one must physically burn the image to a CD-ROM.
