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Red Hat Linux 8.0: The Official Red Hat Linux x86 Installation Guide
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Can You Install Using the CD-ROM?

There are several methods that can be used to install Red Hat Linux.

Installing from a CD-ROM requires that you have purchased a Red Hat Linux 8.0 boxed set, or you have a Red Hat Linux CD-ROM, and you have a CD-ROM drive. Most new computers will allow booting from the CD-ROM. If your system will support booting from the CD-ROM, it is an easy way to begin a local CD-ROM installation.

Your BIOS may need to be changed to allow booting from your CD-ROM drive. For more information about editing your BIOS, see the Section called Booting the Installation Program in Chapter 3.

Alternative Boot Methods

If you cannot boot from the CD-ROM drive, the following alternative boot methods are also available:

Local Boot Diskette

If you need a local boot diskette[1], you must create it. The local boot disk image file, boot.img, is located in the images directory on your Red Hat Linux CD-ROM. Refer to the Section called Making Installation Diskettes, for more information on making a boot diskette.

PCMCIA Boot Diskettes

You may need PCMCIA boot diskettes if you are using a PCMCIA device to install Red Hat Linux. If you need PCMCIA boot diskettes, you must create them. Refer to the Section called Making Installation Diskettes for those instructions.

The following checklist can help you determine if you will need to create PCMCIA boot diskettes:

Do you need help?

You will install Red Hat Linux from a CD-ROM, and your CD-ROM drive is attached to your computer through a PCMCIA card.
You will use a PCMCIA network adapter during the installation.

The PCMCIA boot diskette image files, pcmcia.img and pcmciadd.img, are located in the images directory on your Red Hat Linux/x86 CD-ROM. Refer to the Section called Making Installation Diskettes for more information on making a boot diskette.

Note Note

USB Diskette Drive — You can also boot the Red Hat Linux installation program using a boot diskette in a USB diskette drive (if your system supports booting from a USB diskette drive).

Making Installation Diskettes

You may need to create a diskette from an image file; for example, you may need to use updated diskette images obtained from the Red Hat Linux errata page:
http://www.redhat.com/apps/support/errata/

An image file contains an exact copy (or image) of a diskette's contents. Since a diskette contains file system information in addition to the data contained in files, the contents of the image file are not usable until they have been written to a diskette.

To start, you will need a blank, formatted, high-density (1.44MB), 3.5-inch diskette. You will need access to a computer with a 3.5-inch diskette drive. The computer must be able to run either an MS-DOS program or the dd utility found on most Linux-like operating systems.

The images directory on your Red Hat Linux CD-ROM contains the boot images for Red Hat Linux/x86. Once you have selected the proper image (such as boot.img for a CD-ROM-based installation or bootnet.img for a network installation), transfer the image file onto a diskette using one of the following methods.

Using the `rawrite` Utility

To make a diskette using MS-DOS, use the rawrite utility included on the Red Hat Linux CD-ROM in the dosutils directory. First, label a blank, formatted 3.5-inch diskette appropriately (such as "Boot Disk" or "Updates Disk"). Insert it into the diskette drive. Then, use the following commands (assuming your CD-ROM is drive D:):
C:\> d:D:\> cd \dosutilsD:\dosutils> rawriteEnter disk image source file name: ..\images\boot.imgEnter target diskette drive: a:Please insert a formatted diskette into drive A: andpress --ENTER-- : [Enter]D:\dosutils>

First, rawrite asks you for the filename of a diskette image; enter the directory and name of the image you wish to write (for example, ..\images\boot.img). Then rawrite asks for a diskette drive to write the image to; enter a:. Finally, rawrite asks for confirmation that a formatted diskette is in the drive you have selected. After pressing [Enter] to confirm, rawrite copies the image file onto the diskette. If you need to make another diskette, label that diskette, and run rawrite again, specifying the appropriate image file.

Using the `dd` Command

To make a diskette under Linux (or any other Linux-like operating system), you must have permission to write to the device representing a 3.5-inch diskette drive (known as /dev/fd0 under Linux).

First, label a blank, formatted diskette appropriately (such as "Boot Disk" or "Updates Disk"). Insert it into the diskette drive (but do not mount[3] the diskette). After mounting the Red Hat Linux CD-ROM, change to the directory containing the desired image file, and use the following command (changing the name of the image file and diskette device as appropriate):
# dd if=boot.img of=/dev/fd0 bs=1440k

To make another diskette, label that diskette, and run dd again, specifying the appropriate image file.

Notes

[1]	A boot diskette can be a diskette you created to boot (or start) the installation program, or it can be a diskette you create during the installation process that can later be used to boot the operating system. Normally, your computer boots from a hard disk, but if the hard disk is damaged, you can boot the computer from a bootable diskette.
[2]	The 8.3-type file name originates from the naming convention of eight characters, a period, and three characters for a file name extension. This naming convention supports file names between 1 and 8 characters, which cannot have spaces, and may not be contain ? or _ characters at the start of the name.
[3]	When you mount a floppy or CD-ROM, you make that device's contents available to you. See the Official Red Hat Linux Getting Started Guide for more information.

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