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In this guide we will be providing an easy set of instructions for installing CentOS 7 on your computer. This guide already assumes you have prepared your computer for Linux or alternatively have followed the guides for VMware or VirtualBox if you plan to run CentOS as a virtual machine.
After booting off the CentOS 7 DVD (which is covered in the guides mentioned in the introduction) you will be presented with the above screen. Choose the first option to begin the CentOS 7 installation.
Now select the software requirements under Software Selection of the main menu. Here you will be given the option on what type of installation you would like to do. Select the installation type that is suitable for you and click Done.
Under the Other Storage Options, you have two options to choose from, the first option Automatically configure partitioning will automatically create the necessary partitions for CentOS and is suited for beginners. The second option is to configure the partitions manually and is best suited for more advanced users.
The encryption option is there if you would like to encrypt your system. The purpose of this option is to encrypt all the data on your hard drive to ensure that if your system is stolen the data on your computer can not be used. This works by having CentOS ask you for an encryption password each time you start it, if the person using the system does not know the password then the system will be unable to read the information on your drive. This option is typically only good for desktop installations, a server install will run into problems as someone needs to be physically at the terminal to enter the password each time the system reboots.
Once you have your options selected, click on Done to proceed to the next step.
In this section you are able to enter the root password. This password is the administrator's password for the whole system. After entering your password twice (for verification purposes) click Done. And then click Create User from the menu.
Installation is almost complete but there is one very important step before being able to use CentOS and that is to install all the required security updates.
Log into your computer with the username and password you selected. Next ensure you have a working internet connection. If you are using a wireless connection you can configure the wireless using the network manager on the top right of the screen.
Next launch the Software Update program by going to System → Administration → Software Update.
CentOS has updated its package management system so you may first need to update those packages before updating the rest of the system. The Software Update program handles this for you but requires it to be run twice. When the updates list is presented click on Install Updates.
You will now get this confirmation prompt providing details about the key used to sign the packages you are about to download. You can verify that the signature identifier is correct and then click Yes to continue.
After the update is complete you will see a pop-up window, click on the OK button and the Software Update program will close. You now need to restart the update program by again going to System → Administration → Software Update and refollow the steps above.
When the updates are complete restart your computer for these update to take effect.
To install the updates via the console follow these steps:
yum -y update
Your system is now up to date.
Your CentOS 7 system is now fully installed and up to date. For further guides in configuring certain parts of CentOS please view our CentOS Guides section.