This directory contains image files that can be used to create media capable of starting the Scientific Linux 45 (example) installation process. The boot.iso file is an ISO 9660 image of a bootable CD-ROM. It is useful in cases where the CD-ROM installation method is not desired, but the CD-ROM's boot speed would be an advantage. To use this image file, burn the file onto CD-R (or CD-RW) media as you normally would. The diskboot.img file is a VFAT filesystem image that can be written to a USB pendrive or other bootable media larger than a floppy. Note that booting via USB is dependent on your BIOS supporting this. It should be written to the device using dd.