What is an ISO File?
An ISO file is an image file of an optical disk. They can be created by disk imaging software or from a group of files by optical dick authoring software. Or they can be created by converting another disk image file. ISO files are not compressed and they don’t use a specific format. They are a copy of an optical disk recorded sector by sector and contain the binary image of optical media file systems. The ISO extension is the most common extension for this type of disk imaging. Most Unix-based systems, including Linux, macOS, and starting with Windows 8, have built-in capability to mount an ISO. For any other operating system, there are drivers that can be downloaded to achieve the same result.
How to Open ISO Files
How to Make ISO Files
Exact steps for creating ISO files will vary by program and operating system. Download one of the above listed programs and you should be able to follow typical procedure for opening files or creating files from the File menu. Typically you will select File > Open or File > New and continue through the prompts. Some programs may follow a different procedure for either creation or opening of files.