CentOS 8 (Community Enterprise Operating System) is open-source Linux available to free download and easy to install.

Hardware minimal requirement:

CPU: 2

RAM: 2 GB

Hard drive: 20 GB

Check the following method to install CentOS 8.

Step 1:

Download the CentOS 8 ISO.

CentOS 8 ISO

Step 2:

Create the bootable disk from ISO.

Attach the pen drive to your system and make sure that the pen drive size will be more than 4 GB.

The /dev/ sdb is Pendrive

# dd if=CentOS-8-x86_64-1905-dvd1.iso of=/dev/sdb

Step 3:

Attach the Pendrive to your system and make sure your system should boot from Pendrive. Check the BIOS setting of your system and make change Pendrive booting priority.

Step 4:

Start the installation process.

Image Summary:

In the above image, there are the following three options.

1. Install CentOS Linux 8.0.1905:

This option starts with the installation.

2. Test this media and install CentOS Linux 8.0.1905:

Test the media like bootable Pendrive, CD drive, or ISO is corrupted or

not .

3. Troubleshooting:

Troubleshoot the system if OS is already installed and has a booting issue

in it.

Check Installation Media:



Select the first option to start the installation, or if you want to check the installation media then select the second option. The second option takes time to test the installation media entirely and start the installation.

Step 5:

Select the language and click on the “Continue” button.

Welcome To Language Section

Step 6:

The installation summary window takes time to detect the installation

source and default software selection.

Installation Summary

Step 7:

In the LOCALIZATION option, select the date and time. Select the time zone and time formate 24-hour or AM/PM in it. Click on the “Done” button on the top left side.

Date & Time

Step 8:

(The point number 8 & 9 are Optional) Check this option to avoid

Following the NTP warning at the bottom of the above image. Click the

setting button on the right side after the “Network Time on/off”

button in the image.

NTP Warning

Step 9:

If you already have NTP server then enter IP/FQDN (complete hostname)

of the NTP server and click on the “+” button.



OR

If you don’t have the NTP server then Select the Checkbox option “This URL refers to a pool of NTP servers” directly and click “OK“. As a result of this, it will sync the system time with the NTP server.

NTP Configuration

Automatic Installation Option: Steps 11.

Step 10:

Refer to the Step 6 image, in the “SYSTEM” option to select the installation destination. In the installation destination window, select a

hard drive in “Local Standard Disks” to automate partition, select the

“Automatically configure partition” option in “Other Storage

Options.” Click on the button, “Done” on the top left side.

Step 11:

If you select the “automatic” option from “Storage Configuration” and

Click “Done“. It will redirect to the Installation Summary window and click on the “Begin Installation” button. It will start the installation. You can follow the installation process from Step 19 directly.

Installation Destination Auto

Custom Installation Options: Steps 12 to 18.

Step 12:

Select the “Custom” option from “Storage Configuration” and

Click on the “Done” button.

Installation Destination Custom

Step 13:

Click on the “+” button to create the partitions.

Manual Partitioning

Step 14:

Create the /boot partition.

Boot Partition

Step 15:

Create a swap partition. The swap partition should be double of the

system RAM.

Swap Partition

Step 16:

Create the (root) / partition.

Root Partition

Step 17:

Once you created all partitions, click on the “Done” button. You can add other partitions like /home, /var, etc. if required.

All Partitions

Step 18:

Review the created partition and click on the “Accept Changes” button.

Summary Of Changes

Step 19:

Select the “Network & Host Name” option from the following image.

Installation Summary

Step 20:

In the following image on the top right side under the “help” button,

Click on the “on-off” button. As a result of this, it enables the network card.

At the bottom, there is a “Host Name” text box. You can specify the hostname for the system and click on the “Apply” button.

As a result of this, it will change the system hostname.

Click on the “Done” button once done in the setting.

Network & Host Name

Step 21:

All options are set. You can click to the “Begin Installation” button to begin the installation.

All Options Set

Step 22

In the following image click on the “Root Password” option and set the

root user password.

User Configuration

Step 23:

Set the root user password and click on the “Done” button.

Root Password

Step 24:

Refer to the image from Step 22, click on “User Creation”

option to create another user. Enter the user and password.

Also, if you want to make the user as administrator then select

the checkbox “Make this user administrator.“

Click on the “Done” button once done in the setting.

Create User

Step 25:

Click on the “Reboot” button, once the installation is done.

Reboot

Step 26:

Select the first option to boot the system in the selected kernel.

Grub Menu

Step 27:

Initial Setup. Click the “License Information” option.

Initial Setup

Step 28:

Click to the checkbox to accept the license agreement and click on the “Done” button.

License Information

License Accepted

Step 29:

User login window. Click on user name.

User Login

Step 30:

Enter the password for the user, and you will log in to the system.