30.2. PXE Boot Configuration

The next step is to copy the files necessary to start the installation to the tftp server so they can be found when the client requests them. The tftp server is usually the same server as the network server exporting the installation tree.

Copy the EFI boot images into your tftp root directory:

cp /boot/efi/EFI/redhat/grub.efi /var/lib/tftpboot/X86PC/UNDI/pxelinux/bootx64.efi

Configure your DHCP server to use the EFI boot images packaged with GRUB. A sample configuration in /etc/dhcpd.conf might look like:

  option space PXE;
  option PXE.mtftp-ip    code 1 = ip-address;
  option PXE.mtftp-cport code 2 = unsigned integer 16;
  option PXE.mtftp-sport code 3 = unsigned integer 16;
  option PXE.mtftp-tmout code 4 = unsigned integer 8;
  option PXE.mtftp-delay code 5 = unsigned integer 8;

  subnet 10.0.0.0 netmask 255.255.255.0 {
          option routers 10.0.0.254;
          range 10.0.0.2 10.0.0.253;

          class "pxeclients" {
                  match if substring (option vendor-class-identifier, 0, 9) = "PXEClient";
                  next-server 10.0.0.1;
                 
                  if option arch = 00:06 {
                          filename "X86PC/UNDI/pxelinux/bootia32.efi";
                  } else if option arch = 00:07 {
                          filename "X86PC/UNDI/pxelinux/bootx64.efi";
                  } else {
                          filename "X86PC/UNDI/pxelinux/pxelinux.0";
                  }
          }

          host example-ia32 {
                  hardware ethernet XX:YY:ZZ:11:22:33;
                  fixed-address 10.0.0.2;
          }
  }

Add a config file. A sample config file at /var/lib/tftpboot/X86PC/UNDI/pxelinux/efidefault might look like:
```
default=0
timeout=1
splashimage=(nd)/splash.xpm.gz
hiddenmenu
title RHEL
        root (nd)
        kernel /rawhide-x86_64/vmlinuz
        initrd /rawhide-x86_64/initrd.img
```
For instructions on how to specify the installation source, refer to Section 7.1.3, “Additional Boot Options”.

Copy the splash image into your tftp root directory:

cp /boot/grub/splash.xpm.gz /var/lib/tftpboot/X86PC/UNDI/pxelinux/splash.xpm.gz

Copy the boot images into your tftp root directory:

 cp /path/to/x86_64/os/images/pxeboot/{vmlinuz,initrd.img} /var/lib/tftpboot/X86PC/UNDI/pxelinux/rawhide-x86_64/

Reboot the system, and select the network device as your boot device when prompted.