The .ISO file extension is a disc image that contains the exact duplicate of the original disc including filesystem information, boot code, and directory structures. People commonly use it when copying CDs and DVDs, such as boot-disk start-up files. On occasion, a file may be too large to distribute or even move from one computer to another. If you want to move the file, you can split the bootable ISO into two files for easier distribution with the free WinRAR software application.
