The Red Hat Linux web site has a floppy diskette image for a network installation. For Red Hat Linux 7.1 the image is ftp://ftp.redhat.com/pub/redhat/linux/7.1/en/os/i386/images/bootnet.img.
Install this image on a floppy disk.
bash# mkfs -t msdos -c /dev/fd0 mkfs.msdos 2.2 (06 Jul 1999) bash# dd if=bootnet.img of=/dev/fd0 bs=1440k 1+0 records in 1+0 records out bash# sync
Now mount the diskette and check that the installer files are present.
bash# mount -t vfat /dev/fd0 /mnt/floppy bash# ls /mnt/floppy boot.msg general.msg ldlinux.sys rescue.msg vmlinuz expert.msg initrd.img param.msg syslinux.cfg
This floppy disk uses the SYSLINUX boot loader which was discussed in Section 4.3 and in Section 5.3. Firstly, we alter the boot loader configuration file /mnt/floppy/syslinux.cfg to use the serial port. If you are going to use the vi editor to alter this file, use the -n option to avoid writing a swap file to the floppy disk.
Secondly we add a new boot option. This is modeled upon the other boot options in the file. Our variant passes the serial console parameters to the kernel, the same parameters that we pass during normal operation when using serial console. "serial" seems an appropriate name for the boot option.
label serial kernel vmlinuz append initrd=initrd.img lang= text serial expert devfs=nomount console=ttyS0,9600n8
text, serial and expert are parameters to the Red Hat anaconda installer. Specifying text ensures that the graphical installer does not start. Specifying serial prevents scans for possibly non-existent video hardware. You will need to run Xconfigurator manually if you do have a video card. Specifying expert allows all the configuration options to be seen, giving one floppy image that can be used for all purposes.
Thirdly, we make this new configuration start automatically. As there is no-one at the site, there's no need to issue a boot: prompt.
Fourthy, we write the new configuration to diskette.
Check that the diskette boots. If it does not then write a new boot sector by downloading and running the most recent SYSLINUX.
Finally, create a new boot image for copying to the computers to be upgraded.
If you test the new boot floppy on a machine with a serial console you should briefly see SYSLINUX booting
and then presenting the boot.msg file and then the Linux kernel should be loaded
Linux version 2.4.2-2BOOT ([email protected]) (gcc version 2.96 200001
Next the init system flashes by
Greetings. Red Hat install init version 7.0 starting mounting /proc filesystem... done mounting /dev/pts (unix98 pty) filesystem... done Red Hat install init version 7.0 using a serial console remember, cereal is an important part of a nutritionally balanced breakfast. checking for NFS root filesystem...no trying to remount root filesystem read write... done checking for writeable /tmp... yes running install... running /sbin/loader
before the installation application, called anaconda, is started
Welcome to Red Hat Linux +----------+ Devices +-----------+ | | | Do you have a driver disk? | | | | +-----+ +----+ | | | Yes | | No | | | +-----+ +----+ | | | | | +--------------------------------+ <Tab>/<Alt-Tab> between elements | <Space> selects | <F12> next screen
There does not seem to be a way to access the function keys, fortunately the user interface does not require their use.
Now that the floppy has been tested, eject the disk and reboot the machine into normal operation.