The ISO image format allows you to store virtual backups of your CDs and DVDs on your computer’s hard drive. The contents of your CDs or DVDs are stored in the ISO format, along with its boot information, allowing you to create physical copies as you need them. And unlike standard burning software, an ISO utility like PowerISO–which is capable of reading the ISO format and its boot information–can create a bootable, physical copy of your virtual image file.
