Installing CentOS 6 via the Netinstall option isn’t too difficult. In order to use netinstall, you will have to have an URL to download CentOS from. You will have to enter it on the URL Setup page.
32 bit: http://mirror.centos.org/centos/6/os/i386/ 64 bit: http://mirror.centos.org/centos/6/os/x86_64/
You can choose to either test the media, or skip the test and proceed with the installation. The testing is typically unnecessary.
If you chose to test the media in the previous step, you will be able to test the disc currently in the drive.
You will have the opportunity to test additional media. If you do not wish to, choose Continue.
As this is a netinstall, you will want to download the required components from the internet. Choose the URL option.
Most likely, you will be retrieving the IP address using DHCP, so the default values should work.
Here, you will specify the URL from which the CentOS image should be downloaded from. The URL can be found at the beginning of this post. Do note that the URL is different between i386 (32 bit) and x86_64 (64 bit) installs.
CentOS will attempt to download install.img from the remote server. This can take quite a few minutes.
After install.img has been downloaded, the graphic interface will shortly start. You will use this to install the rest of CentOS.
To begin with, you will choose the language to be used during the installation process.
Just as with most installs, you will have to select your keyboard type.
For most of us, we will be installing to Basic Storage Devices, so that option will probably be used here.
Depending on the current state of your hard drive, you MAY (not always) have to Re-initialize your hard drive. Do read the warning, as you may lose your current data.
You will have the opportunity to specify a hostname. As the direction says, ‘the hostname identifies the computer on a network’. This value can typically be set to anything of your choice.
You will be asked to select your current timezone. Whether ‘System clock uses UTC’ is checked or not depends on your own computer.
You will have to choose a root password, which will be the password needed for most administrative tasks.
You have the option to install to a specific partition, or use all the space on the disk. The simplest solution is to use all space, which is what this tutorial will use.
After you have chosen to proceed, the partition changes will be made. For that to happen, you will have to click Write changes to disk.
In the final step, you will have the opportunity to choose how much to install. Most of these are self explanatory; the Desktop gives you a desktop, and the Database Server gives you a database server.
The final portion of the installation will take place. This can take quite a while depending on the speed of your computer and your internet connection.
Congratulations! CentOS has been successfully installed! You will be able to boot into your system after rebooting.