Red Hat Enterprise Linux 5 Administration Unleashed

Creating the Installation Source 133. The /tmp/rhel/ directory now contains a list of all the files from the image. Copythe boot.iso image file over to the filesystem:cp /tmp/rhel/images/boot.iso /tmp14. Unmount the ISO image:umount /tmp/rhel/Create the boot disc from boot.iso by browsing for it in the Nautilus file browser, rightclickingon it, and selecting Write to Disc… from the menu. Alternatively, use thecdrecord command to write the image to disc if the graphical desktop is not available.TIPIf you already have the first installation CD created, you can issue the command linuxaskmethod at the boot: prompt after booting from the CD instead of booting from aboot disc.Using the ISO FilesAll the installation types except for the CD-ROM installation method can use ISO imagefiles as the installation source. The ISO files can be used in the following ways:. ISO files in a directory on the hard drive for the hard drive installation method oravailable via NFS for the NFS installation method. ISO files loopback mounted and then made available with FTP or HTTPTIPBefore using the ISO files for installation, be sure to verify their checksums asdescribed in the “Creating the Installation CDs” section earlier in this chapter.For a network installation, set up the NFS, FTP, or HTTP server, depending on whichinstallation method you want to use. Don’t forget to make it accessible by all the clientson which you are installing Red Hat Enterprise Linux. Refer to Part IV, “NetworkServices,” for details on setting up these network services.The same network server can provide different variants or versions of the same operatingsystem. When doing so, place each set of ISO images in their own directory. Use descriptivedirectory names such as RHEL5Server or RHEL5U2Client so you can quickly determinewhich OS variant and version they contain.For hard drive installations, transfer all the ISO images into an ext2 or vfat partition onone of the hard drives in the system on which you are about to install. This partitioncannot be formatted during installation because the installation program must access