You can test the integrity of an ISO-based installation source before using it to install Fedora. These sources include DVD, and ISO images stored on a hard drive or NFS server. Verifying that the ISO images are intact before you attempt an installation helps to avoid problems that are often encountered during installation.

To test the checksum integrity of an ISO image, append the rd.live.check to the boot loader command line. Note that this option is used automatically if you select the default installation option from the boot menu (Test this media & install Fedora).