Comment 0 for bug 558728

The cdimage_resource script does a best effort for finding information about the cdimage used to install a system. It first tries the media-info file under /var/log/installer and, if that fails, it then tries the casper.log file under the same directory. The problem is that the former file is readable by all whereas the latter file is only readable by root. So, the cdimage_resource script should be run as root.