The rh71gdth.img.gz is the compressed image file for the ICP-Vortex RAID Controller for the driver disk of RedHat 7.1 To install simply write the uncompressed image (gzip -d rh71gdth.img.gz) to the blank floppy disk, either via rawrite.exe on DOS or under Linux with this command: dd if=rh71gdth.img of=/dev/fd0 Boot from a standard 7.1 boot floppy WITHOUT the RedHat 7.1 CD inserted. At the boot prompt type linux dd ( or 'text dd' for an installation in text mode ) and wait for the installer to ask you to insert the driver disk. Insert the driver disk and continue with the installation: Select your language and keyboard and then select local CDROM or HardDisk as installation media and continue with the installation. In case you have any serious problems with this driver disk please contact developers@redhat.de