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30.2.2. 为 EFI 配置 PXE 引导

  1. 如果还没有安装 tftp-server,请运行 yum install tftp-server
  2. In the tftp-server config file at /etc/xinetd.d/tftp, change the disable parameter from yes to no.
  3. Create a directory within tftpboot for the EFI boot images, and then copy them from your boot directory. In these examples we will name the subdirectory pxelinux, but any other name could be used.
    mkdir /var/lib/tftpboot/pxelinux
    cp /boot/efi/EFI/redhat/grub.efi /var/lib/tftpboot/pxelinux/bootx64.efi
  4. Configure your DHCP server to use the EFI boot images packaged with GRUB. (If you do not have a DHCP server installed, refer to the DHCP Servers chapter in the Red Hat Enterprise Linux Deployment Guide.)
    /etc/dhcp/dhcpd.conf 中的示例配置如下:
      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;
      option arch code 93 = unsigned integer 16; # RFC4578
      subnet netmask {
              option routers;
              class "pxeclients" {
                      match if substring (option vendor-class-identifier, 0, 9) = "PXEClient";
                      if option arch = 00:06 {
                              filename "pxelinux/bootia32.efi";
                      } else if option arch = 00:07 {
                              filename "pxelinux/bootx64.efi";
                      } else {
                              filename "pxelinux/pxelinux.0";
              host example-ia32 {
                      hardware ethernet XX:YY:ZZ:11:22:33;
  5. Add a config file to /var/lib/tftpboot/pxelinux. The file should either be named efidefault or named after the IP address, converted into hexadecimal format without delimiters. For example, if your machine's IP address is, the filename would be 0A000001.
    A sample config file at /var/lib/tftpboot/pxelinux/efidefault might look like:
    title RHEL
            root (nd)
            kernel /rawhide-x86_64/vmlinuz
            initrd /rawhide-x86_64/initrd.img
    关于如何指定安装源的步骤,请参考 第 7.1.3 节 “其他引导选项”
  6. 将 splash 映像复制到 tftp 根目录下:
    cp /boot/grub/splash.xpm.gz /var/lib/tftpboot/pxelinux/splash.xpm.gz
  7. 将引导映像复制到 tftp 根目录下:
    cp /path/to/x86_64/os/images/pxeboot/{vmlinuz,initrd.img} /var/lib/tftpboot/pxelinux/rhel6/
  8. Boot the client system, and select the network device as your boot device when prompted.