Additional Boot Options

While it is easiest to boot using a CD-ROM and perform a graphical
installation, sometimes there are installation scenarios where booting in a
different manner may be needed. This section discusses additional boot
options available for Red Hat Enterprise Linux.

For Itanium users:
To pass options to the boot loader on an Itanium system, enter the following
at the EFI Shell prompt: elilo linux option

For x86, AMD64, and Intel® 64 users:
To pass options to the boot loader on an x86, AMD64, or Intel® 64 system,
use the instructions as provided in the boot loader option samples below.
To perform a text mode installation, at the installation boot prompt, type:
linux text ISO images have an md5sum embedded in them. To test the
checksum integrity of an ISO image, at the installation boot prompt, type:
linux mediacheck

The installation program prompts you to insert a CD or select an ISO image
to test, and select OK to perform the checksum operation. This checksum
operation can be performed on any Red Hat Enterprise Linux CD and does
not have to be performed in a specific order (for example, CD #1 does not
have to be the first CD you verify). It is strongly recommended to perform
this operation on any Red Hat Enterprise Linux CD that was created from
downloaded ISO images. This command works with the CD, DVD, hard
drive ISO, and NFS ISO installation methods.

Also in the images/ directory is the boot.iso file. This file is an ISO image
than can be used to boot the installation program. To use the boot.iso, your
computer must be able to boot from its CD-ROM drive, and its BIOS settings
must be configured to do so. You must then burn the boot.iso file onto a
recordable/rewriteable CD-ROM.

If you need to perform the installation in serial mode, type the following
command:
  • linux console=
For text mode installations, use:
  • linux text console=
In the above command, should be the device you are using (such as
ttyS0 or ttyS1). For example, linux text console=ttyS0.Text mode
installations using a serial terminal work best when the terminal supports
UTF-8. Under UNIX and Linux, Kermit supports UTF-8. For Windows,
Kermit '95 works well.

A Non-UTF-8 capable terminal works as long as only English is used during
the installation process. An enhanced serial display can be used by passing
the utf8 command as a boot-time option to the installation program. For
example:
  • linux console=ttyS0 utf8

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