This is a quick step-by-step guide with pictures to assist you in installing latest version 7 of Centos Linux Operating System. For this, a user needs to have some basic understanding of how Linux system works and also some knowledge about partitioning mechanism.
We shall keep this quick guide as brief as possible.
You can download Centos 7 from here or using official CentOS Download Page and either make a bootable USB or DVD drive for installation. We assume that, you have a new computer or no operating system installed. Please follow the below wizard to install Centos 7 −
The moment you boot from Centos setup media, you should see the following screen −
Choose Installation Language
Next screen should appear and prompt you to select and use an installation language for this installation process which you’re comfortable with.
For this article, we shall select English language option. However, you can also choose any other available language of your choice.
You should now see a screen with title Installation Summary. Actually this window has all the options that user can configure.
There are three main categories −
We shall look into all options one by one.
These setting options deal with the locality of the user which in turn helps the system to provide the user a customized feel.
Date & Time
This window provides options to set regional values of user like his/her region (locality), city and local date & time.
This option is about setting up your keyboard preferences where the user can choose a keyboard layout which he/she is currently using it.
This option provides us the ability to add any language support to our Linux system.
Here, we are providing a source of installation files for Centos 7. It can be directly plugged in a suitable device like − USB, HDD or CDROM or a network path. We can also provide repositories to install additional software.
Like any other Linux flavors, Centos 7 offers us huge list of software to select from. By default, it should go with the minimal installation that does not even has GUI. For our example, we shall select GNOME Desktop environment.
This category contains options for the system being installed. It deals with the partition schema for the host and defines its identity over the network.
Network & Hostname
Let’s first learn about network options. This window has hostname by which this system should be recognized over local network. Left hand side window shows available network options like ethernet or wifi.
This window can be said to be the most crucial one. Here, we can select the disk on which the system needs to be installed.
Or if the user has some experience with Linux partitioning and wants to customize disk allocation, he/she can choose “I will configure partitioning“ option. User needs to choose a mount-point and provide desired capacity” −
Swap partition should be double than that of main memory available with the computer. After you decide about all your partition schema, the system will give you a summary report for what it is going to do like the sample screenshot below:
This window has exclamation sign on root password and on user creation. This window is prompting us to assign the root password and create at least one user. Though being optional, but for ease of use after installation, we shall proceed with them now. First we click on root password −
After system is installed successfully it should do some post installation activities. You should see the following screen −
For the disclaimer part, images have been cropped and scaled to fit. Advance users can also install Linux without using GUI mode and can also customize the installation at the install time.
If you’re installing Linux parallel to other operating system, please do not forget to read about Linux boot loader and its work philosophy. If the system has come with pre-installed operating system, then there are chances that you never see the Linux boot loader unless some changes are made into the BIOS settings. Do read those instructions before proceeding.