ISO9660 CD media logic is an internationally recognized standard that defines the format of the files and directories on the CD-ROM. this standard allows different computers with different operating systems to access the same data format. CD-ROM is currently its obvious advantages, success is not only due to the media and attributed to the ISO9660 standard, such as the media around the world identify and collaborate with each other. All computer platforms as a file system on a CD. File system is designed to be UNIX,VAXVMS,MS-DOS, and Mac and their various derivatives are recognized, ISO9660 means compatible with different operating systems.