About ISO image file
ISO image is an archive file (disk image) of optical disk (CD, DVD, Blu-Ray) using ISO (International Organization for Standardization) format. ISO image is unattached format, that merges series of files into one single file according to a definite format. ISO images typically use .ISO file extension, but on the Mac you can find ISO images with .CDR file extension. The name ISO is taken from the ISO 9660 file system used with CD-ROM media.
How to burn ISO
To burn ISO image in Mac OS X, you can use Apple Disk Utility.
- Start Apple Disk Utility (Applications → Utilities → Disk Utility).
Select File → Open Disk Image... option.
- Select the ISO image, that you want to burn on an optical disc.
Insert optical disc to your disc burner and select Burn option in the toolbar.
- Click on Burn option and the ISO image will be burned on your optical disc.