1. Download CentOS 5.9 Net Install (NetInstall) Image
Select mirror here:i386 version
x86_64 version
Select ISO image
CentOS-5.9-i386-netinstall.iso
CentOS-5.9-x86_64-netinstall.iso
2. Burn Image to CD and Boot Computer Using CentOS 5.9 Installation CD
Check CentOS image MD5 sum and burn image to CD with your favourite CD burner. And boot computer using CentOS Installation CD.3. Select Network Installation (NetInstall) on LiveCD Grub Menu or just press enter on CentOS Netinstall CD
4. Booting CentOS 5.9 Installer
5. Choose a Language
6. Select keyboard type
7. Select Network Installation Method
8. Configure TCP/IP settings
9. Setup CentOS 5.9 Netinstall URL (Installation Web site name and CentOS directory)
Web site name:mirror.centos.org
CentOS directory for i386:
/centos/5/os/i386
or
/centos/5.9/os/i386
CentOS directory for x86_64:
/centos/5/os/x86_64
or
/centos/5.9/os/x86_64
10. Downloading Installer
11. Welcome to CentOS Screen
12. Select Partitioning Type
Select “Create custom layout” option if you want modify partitions.
Here you can modify partition layout.
13. Boot Loader Configuration
14. Network configuration
15. Select Time Zone
16. Set Root Password
17. Select packages for Installation
18. Installing Selected Packages
19. Installation Completed, Reboot
20. Booted on Just Installed CentOS 5.9 Linux Server Command Line
Sumber : http://www.if-not-true-then-false.com/2010/centos-netinstall-network-installation/