Installing Centos 6.9

CentOS (Community Enterprise Operating System) is a free Linux operating system that has a 100% binary compatibility with RHEL (Red Hat Enterprise Linux). Because of this compatibility, many individuals and organisations choose CentOS as their choice of Linux. In the example that follows, we will show you how to install a minimal build server without a graphical user desktop. To install CentOS 6.9 (Minimal Build) simply follow the instructional guide below:

To download your iso image of CentOS 6.9, follow the Link: CentOS 6.9 Download

In the example that follows I have used the 64 bit version FileName: CentOS-6.9-x86_64-minimal.iso.
These “iso” images can be found in either a 32 bit or 64 bit option. (32 bit = i386 and 64 bit = x86_64)

Once you have downloaded your CentOS 6.9 iso for your chosen architecture (32 bit or 64 bit), you will need to burn this to a blank CD/DVD. For software that can do this, search for “dvd iso burning software” in the search box located at the top of this page. Your system may already have CD/DVD burning software installed such as “Brasero, K3B, Nero, CDBurnerXP or Roxio”. Once you have burned your “iso” image of CentOS 6.9 to your DVD, you will need to leave the DVD in the DVD drive and reboot your system. As your computer reboots, you will need to press the appropriate key to access your system’s BIOS settings. On many systems this key will be “F8”, “F11” or “F12”. Most systems will display the a message indicating which key needs to be pressed. Once you have access to your BIOS settings, you will need to modify the boot sequence order of your system to boot from CD/DVD first. Once you have made this change, you can reboot your system and follow the instructions below. If you are using a Virtualised environment such as VirtualBox or VMWare, simply copy your iso image to the relevant directory/data-store.

Welcome to CentOS 6.9 Installation Menu

To start your installation of CentOS 6.9, simply highlight the “Install or upgrade an existing system” and press enter. Your installation will now start.

Testing Installation Media

It’s always recommended that you should test your installation media before carrying out an installation. If you do not want to test your installation media, then select “skip” to continue.

CentOS 6 Start Screen

At this screen click on the “Next” button to start your installation.

Language Selection

At this screen you will need to select the language that is to be used throughout the installation. In this example “English” has been chosen.

Select Keyboard

Select the appropriate keyboard for your system. In this example I have chosen a “United Kingdom” keyboard.

Selecting Storage Devices

At this screen you have two options available. “Basic Storage Devices” and “Specialized Storage Devices In the example I have gone with the “Basic Storage Device” option.

Storage Device Warning

At this screen you must confirm you are happy to use the identified disk for your installation of CentOS 6.9.

Provide a Hostname

At this screen you must provide a unique name hostname to be used by your new system. In the example I have chosen “centos69a. It is also from this screen that you have the option to configure your network settings. If you want to use “DHCP to automatically allocate your system an IP address, then simply click on “Next”. If you wish to manually assign an IP address to your new system, then click on the “Configure Network option.

Network Connections

If you have chosen the option to configure your network as per the previous step. You will be presented with a list of attached interfaces to your system. At this screen, highlight the interface you want to work with and then choose Edit

Editing Interface

It is from this screen that we can manually assign an IP address to the interface. In the example, I am going to be configuring the interface under the heading “IPv4 Settings“. Under the “Method pull down menu, amend the selection to read “Manual“. This is the option for a “static” IP address. Now click on the Address, Netmask and Gateway boxes to enter your network details. In the example, I have added a static IP address of ““, a Netmask of “, and a Gateway address of “

You are also required to provide the IP address of a DNS server to be used. If this information has not been provided to you and you require external internet access, you may use a free address of ““.

If you are configuring a system that will be part of a wider network, you may add a list of Domain names into the “search Domains” box.

I have also selected both of the options: “Connect automatically and Available to all users.

Once you are happy with your network configuration settings, click on “Apply“.

Configure your Time Zone

At this screen you must choose your geographic location from the pull down menu or from the map. In the example “Europe/London” has been chosen. It is this setting that will set your time zone that will be used by your system.

Root Password

At this screen you must provide a “root” password to be used on your system. If you supply a weak password, then you will be asked to confirm that you want to use the weak password. Once you have provided your password, click on “Next” to continue with the installation process.

Installation Type


At this screen several options are available to select. In the example, I have chosen the option “Use All Space“. You also have the option to “Encrypt system“.

Write Storage Configuration

From the pop menu, you must choose “Write changes to disk” to allow the installation to continue.

Installation Continues

At this screen, no further interaction is required. Progress of the installation is displayed by a progress bar.


Congratulations, your CentOS installation is now complete. Before you can use your system, a re-boot is required. Click on the “Reboot” icon in the lower right hand corner.

Login Screen

At the login screen, you must use the “root” account to login with and use the password you provided earlier.