First make Boot and Supplimental disks from the images available at ftp.redhat.com or in the images directory of your Red Hat CDROM. If you have a working Unix-style system available, you can use the 'dd' command to create the disks once you've obtained the boot.img and supp.img images:
% dd if=boot.img of=/dev/fd0 % dd if=supp.img of=/dev/fd0
If you only have DOS/Windows machines available, all is not lost. The RAWRITE.EXE utility, available in the dosutils section of your Red Hat CDROM or directly from ftp.redhat.com can do the same job:
C:\> rawrite -f supp.img -d a: C:\> rawrite -f boot.img -d a: