The following procedure describes how to boot the Red Hat Enterprise Linux (RHEL) 5.x or 6.x from a PXE network environment. It assumes that you are booting the install media from RHEL 5.x or 6.x KickStart image (network repository).
KickStart is Red Hat's automated installation method. It enables a system administrator to create a single image containing the settings for some or all installation and configuration parameters that are normally provided during a typical Red Hat Linux installation. Typically, a KickStart image is placed on a single network server and read by multiple systems for installation.
Before You Begin
The following requirements must be met prior to performing the RHEL from a PXE network boot environment:
If you are using a KickStart image to perform the installation, you must:
Create a KickStart file.
Create the boot media with the KickStart file or make the KickStart file available on the network.
To use PXE to boot the installation media over the network, you must:
Configure the network (NFS, FTP, HTTP) server to export the installation tree.
Configure the files on the TFTP server necessary for PXE booting.
Configure the server's MAC network port address to boot from the PXE configuration.
Configure the Dynamic Host Configuration Protocol (DHCP).
Follow the PXE network installation instructions in the Red Hat Enterprise Linux 5.7: System Administration Guide at:
Note - To ensure the fastest possible network performance, configure your network switch(es) to either auto-negotiate or to the highest line speed the switch(es) support, up to the maximum speed (10 Gb/s) supported by the server Ethernet ports (NET 0 - NET 3).
The BIOS screen appears.
Note - The next events occur very quickly; therefore, focused attention is needed for the following steps. Watch carefully for these messages as they appear on the screen for a brief time. You might want to enlarge the size of your screen to eliminate scroll bars.
The screen that appears will differ depending on whether you have BIOS configured for legacy BIOS mode or UEFI mode.
Note - RHEL 5.7 through 5.10 only support legacy BIOS mode. They do not support UEFI BIOS mode.
For RHEL 5.7 through 5.10, the following screen appears:
For RHEL 6.1 through 6.5 in legacy BIOS mode, the following screen appears:
For RHEL 6.1 through 6.5 in UEFI BIOS mode, the following screen appears:
Note - The boot device menu that appears in your installation might differ depending on the type of disk controller installed in your server.
The network bootloader loads and a boot prompt appears. After a few seconds the installation kernel will begin to load.