Installing red hat enterprise linux1

Installing Red Hat Enterprise Linux 6
Insert the RHEL 6 DVD into the appropriate drive and power on the
system. If the system tries to boot from the hard disk drive you will need
to enter the BIOS set up for your computer and change the boot order
so that it boots from the DVD drive first. Once the system has booted
you will be presented with the following screen:
To install using the graphical installer, simply select the first installation
option and press the <Enter> key. If you encounter problems with the
display when the graphical installer begins, reboot and try again with the

basic video driver option. Note also that if the host system has
insufficient memory or a graphics card is not detected, the installer will
run in text mode.
Options are also available to boot from the current operating system on
the local drive (if one is installed), test the system memory, or rescue an
installed RHEL 6 system. The last option alone is reason enough to
keep the installation DVD in a safe place in case you need to perform a
rescue at some future date.
The RHEL installer will then provide the option to test the installation
media for errors. Use the arrow keys to navigate between the options
and make a selection with the <Enter> key. After a short delay the first
screen of the graphical installer will appear. Navigate through the next
few pages to configure your preferred language, keyboard type and
storage devices (unless you plan to use a Storage Area Network device,
the Basic option is recommended). If the installer detects that the target
disk needs to be initialized a dialog will appear seeking confirmation.
Timezone and the Root Password
Subsequent screens will request information about Timezone and the
root password of the system.
On the Timezone screen, make a selection corresponding to your
geographical location. The option is also provided to use UTC which
automatically adjusts the time to account for daylight savings time. If the
computer on which RHEL is being installed also runs another operating
system which already uses UTC (such as Windows), leave this option
unselected.
On the next screen, enter a password for the root account on the
system. The root, or super-user account is a special user that has
administrative privileges on the system. Whilst you will generally use
your own account to log into the system, you will need to gain root
privileges in order to configure the system and to perform other
administrative tasks.

The installer will subsequently move on to the disk partitioning screen.
Partitioning a Disk for RHEL 6
When you reach the disk partitioning phase of the installation, the
installer will present a screen similar to the one illustrated in the
following figure:
A number of options are provided for allocating space for the installation
of Fedora:
 Use All Space - The entire disk drive will be assigned to the RHEL 6
operating system installation. Any pre-existing partitions, together
with any existing operating systems and associated data files
contained therein will be deleted to make room for RHEL. This option

should only be used if you are absolutely sure you no longer need
anything that is currently stored on that disk, or have already backed
up all user files.
 Replace existing Linux System(s) - If the drive was previously
configured to support a Windows/Linux dual boot environment or was
devoted entirely to another Linux installation, this option may be
selected to instruct the installer to delete the pre-existing Linux
partition and replace it with RHEL 6. Once again, it is important to
backup any user data that may still be needed.
 Shrink Current system - Allows an existing partition to be reduced
in size to make room on the drive for the RHEL 6 installation. More
details on this option are provided in a later chapter entitled Installing
RHEL 6 with Windows in Dual Boot Environment.
 Use Free Space - If the current partitions on the drive do not take up
the entire disk space available, any unallocated space may be
assigned to the RHEL installation using this option.
 Create Custom Layout - When selected, this option displays the
disk partitioning tool allowing each partition on the disk to be
manually configured. Unless you have experience with low level disk
partitioning this option is not recommended.
On this screen, make a selection based on your requirements. If, for
example, the entire disk is to be used for RHEL 6, select the Use All
Space option. In order to implement a dual boot configuration, refer
to Installing RHEL 6 with Windows in Dual Boot Environment.
For the purposes of this chapter we are assuming the entire disk is
available to accommodate the RHEL 6 installation so select the Use All
Space option.
Beneath the partition menu is the option to encrypt the system. The
choice of whether to use encryption will depend on the purpose for

which the system is being used, its physical location and type of data it
is going to store. Keep in mind that as with any form of encryption there
are performance overheads associated with selecting this option.
Having made the partitioning selection click Next to begin the
partitioning process.
Package Selection
Linux is a modular operating system in that it provides a basic operating
system kernel and infrastructure upon which a range of different
packages may be installed depending on your specific requirements for
the system. If, for example, you plan on using the system as
a webserver you would need to install the Apache web server package.
At this point in the installation the installer needs us to decide which
packages should be installed along with the base operating system and
displays the screen shown in the following figure:

This screen allows you to make general choices about the type of
functions you need the system to perform. Ideally, you should select the
option that most closely resembles the intended purpose of the system.
To view or modify the specific package selections, make sure that
the Customize Now option is selected before proceeding. You will then
be provided a complete overview of which packages are selected for
installation and which are not together with the ability to make changes
to these selections. Don’t worry too much about getting this exactly right
at this stage. Packages can be added and removed at any time after the
installation is complete by selecting the desktop System ->
Administration -> Add/Remove Software menu option.
The Physical Installation
Having made the appropriate package selections, clicking Next will
initiate the installation process. During the installation process, the
installer will provide a running commentary of the selected packages as
they are installed and a progress bar. If you are using the DVD the
installation will complete without further interaction. Once the installation
process is complete a screen will appear containing a button to reboot
the system. Remove the installation media and click the button.
Final Configuration Steps
After the system has started for the first time, the RHEL 6 Setup
Agent will appear with a welcome message. Click on the Forward button
to display licensing terms and conditions and select the option to accept
the terms of the agreement (assuming of course that you do agree to
them).
On the Setup Software Updates screen, register the system with the
Red Hat Network (RHN). This enables additional packages to be
installed from the RHN repositories and also allows the system to
receive software updates. In order to register the system, enter your

RHN user login and password when prompted. If you would prefer to
register the system at a later time, do so simply by running the
rhn_register command from a terminal window or selecting the System -
> Administration -> RHN Registration menu option.
Choose whether or not to enable Kdump support and then work through
the remaining screens to create a user account for yourself and verify
the date and time. If you would like the date and time of your RHEL
system to be synchronized with an external Network Time Protocol
server, select the Synchronize date and time over network option before
proceeding.
Having worked through all the set up pages, click Finish to exit the
setup agent and log in using your newly created account credentials.
Performing an RHEL 6 Network
Installation

Installing red hat enterprise linux1

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