UbuntuHelp:IsoImage
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Definition
The term "ISO file" refers to a single file which contains within it a file system conforming to the ISO 9660 standard. The ISO 9660 standard defines the file structure to be used for CD-ROM media which ensures all CD-ROM drives conforming to the standard can read data disks regardless of the operating system of the computer. ISO files are also referred to as "ISO images" or just plain "ISOs". An ISO file typically has the file extension .iso, but some operating systems such as MAC OS use the file extension .cdr. In practical terms, an ISO image can be thought of as akin to a tar or zip archive which needs special software to extract individual files although ISO images are not compressed.
Purpose of an ISO File
ISO files are ideal for distributing anything that would also be suitable for distribution on a CD-ROM. The main advantage of an ISO file is that it can be transferred over the network and the recipient can then 'burn' the ISO image to create their own CD. Almost all Linux distributions are offered in ISO format.
How to use an ISO File
Please see the page BurningIsoHowto for complete instructions on how to burn an ISO image onto a CD or DVD.
How to Create an ISO File
For instructions on how to create ISOs from a CD or DVD, see UbuntuHelp:CreateIsoFromCDorDVD.
