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
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4. Booting CentOS 5.9 Installer
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5. Choose a Language
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6. Select keyboard type
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7. Select Network Installation Method
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8. Configure TCP/IP settings
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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
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10. Downloading Installer
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11. Welcome to CentOS Screen
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12. Select Partitioning Type
Select “Create custom layout” option if you want modify partitions.
Here you can modify partition layout.
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13. Boot Loader Configuration
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14. Network configuration
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15. Select Time Zone
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16. Set Root Password
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17. Select packages for Installation
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18. Installing Selected Packages
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19. Installation Completed, Reboot
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20. Booted on Just Installed CentOS 5.9 Linux Server Command Line
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Sumber : http://www.if-not-true-then-false.com/2010/centos-netinstall-network-installation/