PXELINUX

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Contents

Description

PXELINUX is a Syslinux derivative, for booting from a network server using a network ROM conforming to the Intel PXE (Pre-Execution Environment) specification. PXELINUX is not a program intended to be flashed or burned into a PROM on the network card. For such possibility, check out iPXE (http://ipxe.org/).

If you want to create PXE-compliant boot PROM for your network card (to use with PXELINUX, for example), check out NetBoot (http://netboot.sourceforge.net/).

Working directory

The initial Current Working Directory is either as supplied by DHCP option 210 (pxelinux.pathprefix), the hardcoded path-prefix or the parent directory of the PXELINUX file, as indicated by DHCP fields sname and file (sname="192.168.2.3" and file="boot/pxelinux.0" result in "tftp://192.168.2.3/boot/", or in "192.168.2.3::boot/" in older PXELINUX format) with the precedence as specified under the #Options section of this document.

All unqualified filenames are relative to the Current Working Directory.

Configuration

The basic configuration is the same for all Syslinux variants. This document explains only some of the differences specifically applicable to PXELINUX.

On the TFTP server, create the directory "/tftpboot", and copy "pxelinux.0" (from the Syslinux distribution) and any kernel or initrd images that you want to boot.

[5.00+] Also copy "ldlinux.c32" from the Syslinux distribution to the "/tftpboot" directory on the TFTP server.

Finally, create the directory "/tftpboot/pxelinux.cfg". The configuration file (equivalent of syslinux.cfg -- see the SYSLINUX FAQ for the options here) will live in this directory.

Because more than one system may be booted from the same server, the configuration file name depends on the IP address of the booting machine.

Before a generic explanation, let's see first an example. When:

  • the bootloader file name is "/mybootdir/pxelinux.0"; and,
  • the client UUID is "b8945908-d6a6-41a9-611d-74a6ab80b83d"; and,
  • the Ethernet MAC address is "88:99:AA:BB:CC:DD"; and,
  • the IP address is "192.0.2.91", or in uppercase hexadecimal, "C0A8025B";

then PXELINUX will try the following configuration files (in this order):

	/mybootdir/pxelinux.cfg/b8945908-d6a6-41a9-611d-74a6ab80b83d
	/mybootdir/pxelinux.cfg/01-88-99-aa-bb-cc-dd
	/mybootdir/pxelinux.cfg/C000025B
	/mybootdir/pxelinux.cfg/C000025
	/mybootdir/pxelinux.cfg/C00002
	/mybootdir/pxelinux.cfg/C0000
	/mybootdir/pxelinux.cfg/C000
	/mybootdir/pxelinux.cfg/C00
	/mybootdir/pxelinux.cfg/C0
	/mybootdir/pxelinux.cfg/C
	/mybootdir/pxelinux.cfg/default

Let's see now what exactly the above example represents.

After attempting the file as specified in the DHCP or hardcoded options, PXELINUX will probe the following paths, prefixed with "pxelinux.cfg/", under the initial Working Directory.

  • The client UUID, if provided by the PXE stack.
Note that some BIOSes do not have a valid UUID, and it might end up reporting something like all 1's.
This value is represented in the standard UUID format using lowercase hexadecimal digits, e.g. "b8945908-d6a6-41a9-611d-74a6ab80b83d".
  • The hardware type (using its ARP type code) and address, all in lowercase hexadecimal with dash separators.
For example, for an Ethernet (ARP type "1") with address "88:99:AA:BB:CC:DD", it would search for the filename "01-88-99-aa-bb-cc-dd".
  • The client's own IPv4 address in uppercase hexadecimal, followed by removing hex characters, one at a time, from the end. For example, "192.168.2.91" → "C0A8025B".
The included program, "gethostip", can be used to compute the hexadecimal IP address for any host.
  • Lowercase "default".


Note that all references to filenames are relative to the directory in which "pxelinux.0" lives.

PXELINUX generally requires for filenames (including any relative path) to be 127 characters or shorter in length.

[3.20+] If PXELINUX cannot find a configuration file, it will reboot after the timeout interval has expired. This keeps a machine from getting stuck indefinitely due to a boot server failure.

PXELINUX does not support MTFTP, and there are no plans of doing so. It is of course possible to use MTFTP for the initial boot, if you have such a setup. MTFTP server setup is beyond the scope of this document.

How Should I Setup my TFTP server?

PXELINUX currently requires that the boot server has a TFTP server which supports the "tsize" TFTP option (RFC 1784/RFC 2349).

Also, please do check out the problematic hardware reference page to see if your PXE stacks need any special workarounds.

Some TFTP servers which have been successfully used with PXELINUX include:

  • The "tftp-hpa" TFTP server, a highly portable update and port of the BSD TFTP server code is available at:
http://www.kernel.org/pub/software/network/tftp/ or ftp://ftp.kernel.org/pub/software/network/tftp/ .
  • Another TFTP server which supports this is atftp by Jean-Pierre Lefebvre:
ftp://ftp.mamalinux.com/pub/atftp/ atftp is likely going to perform better than tftp-hpa on a large boot server, but may not be quite as widely portable. If your boot server runs Windows (and you can't fix that), try tftpd32 by Philippe Jounin: http://tftpd32.jounin.net/
  • Eric Cook of Intel also reports that the TFTPD server from Win2000 Server RIS can be used:
The trick is to install RIS, but don't configure it with the GUI. Instead, do the following: In the registry, add the folder \HKLM\System\CurrentControlSet\Services\TFTPD\Parameters. In the Parameters folder, add a key called Directory, with a value of the TFTP root directory path. With the Services GUI, configure the TFTPD service for Automatic start and start it. If you DO configure the RIS in Win2k, you end up with the MS PXE stuff, which is ugly to get rid of.
However, Christian "Dr. Disk" Hechelmann reports having success with using the Windows RIS as-is, and has sent a nice writeup on how to set it up. See Windows Remote Install System.

How Should I Setup My DHCP server?

The PXE protocol uses a very complex set of extensions to DHCP or BOOTP. However, most PXE implementations -- this includes all Intel ones version 0.99n and later -- seem to be able to boot in a "conventional" DHCP/TFTP configuration. Assuming you don't have to support any very old or otherwise severely broken clients, this is probably the best configuration unless you already have a PXE boot server on your network.

A sample DHCP setup, using the "conventional TFTP" configuration, would look something like the following, using ISC dhcp (2.0 or later) dhcpd.conf syntax:

       allow booting;
       allow bootp;

       # Standard configuration directives...

       option domain-name "domain_name";
       option subnet-mask subnet_mask;
       option broadcast-address broadcast_address;
       option domain-name-servers dns_servers;
       option routers default_router;

       # Group the PXE bootable hosts together
       group {
               # PXE-specific configuration directives...
               next-server TFTP_server_address;
               filename "/tftpboot/pxelinux.0";

               # You need an entry like this for every host
               # unless you're using dynamic addresses
               host hostname {
                       hardware ethernet ethernet_address;
                       fixed-address hostname;
               }
       }

Note that if your particular TFTP daemon runs under chroot (tftp-hpa will do this if you specify the -s (secure) option; this is highly recommended), you almost certainly should not include the /tftpboot prefix in the filename statement.

If this does not work for your configuration, you probably should set up a "PXE boot server" on port 4011 of your TFTP server; a free PXE boot server is available at: http://www.kano.org.uk/projects/pxe/

With such a boot server defined, your DHCP configuration should look the same except for an "option dhcp-class-identifier" (ISC dhcp 2) or "option vendor-class-identifier" (ISC dhcp 3):

       allow booting;
       allow bootp;

       # Standard configuration directives...

       option domain-name "domain_name";
       option subnet-mask subnet_mask;
       option broadcast-address broadcast_address;
       option domain-name-servers dns_servers;
       option routers default_router;

       # Group the PXE bootable hosts together
       group {
               # PXE-specific configuration directives...
               option dhcp-class-identifier "PXEClient";
               next-server pxe_boot_server_address;

               # You need an entry like this for every host
               # unless you're using dynamic addresses
               host hostname {
                       hardware ethernet ethernet_address;
                       fixed-address hostname;
               }
       }

Here, the boot file name is obtained from the PXE server.

If the "conventional TFTP" configuration doesn't work on your clients, and setting up a PXE boot server is not an option, you can attempt the following configuration. It has been known to boot some configurations correctly; however, there are no guarantees:

       allow booting;
       allow bootp;

       # Standard configuration directives...

       option domain-name "domain_name";
       option subnet-mask subnet_mask;
       option broadcast-address broadcast_address;
       option domain-name-servers dns_servers;
       option routers default_router;

       # Group the PXE bootable hosts together
       group {
               # PXE-specific configuration directives...
               option dhcp-class-identifier "PXEClient";
               option vendor-encapsulated-options 09:0f:80:00:0c:4e:65:74:77:6f:72:6b:20:62:6f:6f:74:0a:07:00:50:72:6f:6d:70:74:06:01:02:08:03:80:00:00:47:04:80:00:00:00:ff;
               next-server TFTP_server;
               filename "/tftpboot/pxelinux.0";

               # You need an entry like this for every host
               # unless you're using dynamic addresses
               host hostname {
                       hardware ethernet ethernet_address;
                       fixed-address hostname;
               }
       }

Note that this will not boot some clients that will boot with the "conventional TFTP" configuration; Intel Boot Client 3.0 and later are known to fall into this category.

Can I send information to PXELINUX via special options in the DHCP response?

PXELINUX (starting with version 1.62) supports the following nonstandard DHCP options, which depending on your DHCP server you may be able to use to customize the specific behaviour of PXELINUX:

  • Option 208: pxelinux.magic must be set to F1:00:74:7E (241.0.116.126) for PXELINUX prior to 3.55 to recognize any special DHCP options whatsoever. As of 3.55, this is no longer required.
  • Option 209: pxelinux.configfile specifies the PXELINUX configuration file name.
  • Option 210: pxelinux.pathprefix specifies the PXELINUX common path prefix, instead of deriving it from the boot file name. This almost certainly needs to end in whatever character the TFTP server OS uses as a pathname separator, e.g. slash (/) for Unix.
  • Option 211: pxelinux.reboottime specifies, in seconds, the time to wait before reboot in the event of TFTP failure. 0 means wait "forever" (in reality, it waits approximately 136 years.)

ISC dhcp 3.0 supports a rather nice syntax for specifying custom options; you can use the following syntax in dhcpd.conf if you are running this version of dhcpd:

       option space pxelinux;
       option pxelinux.magic      code 208 = string;
       option pxelinux.configfile code 209 = text;
       option pxelinux.pathprefix code 210 = text;
       option pxelinux.reboottime code 211 = unsigned integer 32;

In current versions of PXELINUX, this is supported both as a site-option-space, and as a vendor-option-space.

Inside your PXELINUX-booting group or class (whereever you have the PXELINUX-related options, such as the filename option), you would add, for example:

       # Always include the following lines for all PXELINUX clients
       site-option-space "pxelinux";
       option pxelinux.magic f1:00:74:7e;
       if exists dhcp-parameter-request-list {
               # Always send the PXELINUX options (specified in hexadecimal)
               option dhcp-parameter-request-list = concat(option dhcp-parameter-request-list,d0,d1,d2,d3);
       }
       # These lines should be customized to your setup
       option pxelinux.configfile "configs/common";
       option pxelinux.pathprefix "/tftpboot/pxelinux/files/";
       option pxelinux.reboottime 30;
       filename "/tftpboot/pxelinux/pxelinux.bin";

In ISC dhcp versions greater than 3.0, site-local option spaces start at 224, not 128 (to be compliant with RFC3942), so you should define the PXELINUX options 208-211 as regular DHCP options, rather than site local ones -- for example:

       option magic      code 208 = string;
       option configfile code 209 = text;
       option pathprefix code 210 = text;
       option reboottime code 211 = unsigned integer 32;

Then inside your PXELINUX-booting group or class (whereever you have the PXELINUX-related options, such as the filename option), you would add, for example:

       # Always include the following lines for all PXELINUX clients
       option magic f1:00:74:7e;
       if exists dhcp-parameter-request-list {
               # Always send the PXELINUX options (specified in hexadecimal, ie: 208 = 0xd0, 209 = 0xd1, etc.)
               option dhcp-parameter-request-list = concat(option dhcp-parameter-request-list,d0,d1,d2,d3);
       }
       # These lines should be customized to your setup
       option configfile "configs/common";
       option pathprefix "/tftpboot/pxelinux/files/";
       option reboottime 30;
       filename "/tftpboot/pxelinux/pxelinux.bin";

Note that the configfile is relative to the pathprefix: this will look for a config file called /tftpboot/pxelinux/files/configs/common on the TFTP server.

The "option dhcp-parameter-request-list" statement forces the DHCP server to send the PXELINUX-specific options, even though they are not explicitly requested. Since the DHCP request is done before PXELINUX is loaded, the PXE client won't know to request them.

Using ISC dhcp 3.0 you can create a lot of these strings on the fly. For example, to use the hexadecimal form of the hardware address as the configuration file name, you could do something like:

       site-option-space "pxelinux";
       option pxelinux.magic f1:00:74:7e;
       if exists dhcp-parameter-request-list {
               # Always send the PXELINUX options (specified in hexadecimal)
               option dhcp-parameter-request-list = concat(option dhcp-parameter-request-list,d0,d1,d2,d3);
       }
       option pxelinux.configfile =
               concat("pxelinux.cfg/", binary-to-ascii(16, 8, ":", hardware));
       filename "/tftpboot/pxelinux.bin";

If you used this from a client whose Ethernet address was 58:FA:84:CF:55:0E, this would look for a configuration file named "/tftpboot/pxelinux.cfg/1:58:fa:84:cf:55:e".

using vendor options

       host trantor-sky2 {
               hardware ethernet 00:00:5a:70:c2:71;
               vendor-option-space pxelinux;
               option pxelinux.magic f1:00:74:7e;
               option pxelinux.pathprefix "http://raidtest.hos.anvin.org/tftpboot/";
               option pxelinux.reboottime 30;
               filename "/pxelinux.0";
       }

That removes the need to muck with the dhcp-parameter-request-list

using vendor options, handcrafted

       host trantor-sky2 {
               hardware ethernet 00:00:5a:70:c2:71;
               option vendor-encapsulated-options
                     d0:04:f1:00:74:73:
                     d2:23:68:74:74:70:3a:2f:2f:72:61:69:64:74:65:73:74:2e:
                           61:6e:76:69:6e:2e:6f:72:67:2f:74:66:74:70:62:6f:
                           6f:74:2f:
                     d3:04:00:00:00:1e;
               filename "/pxelinux.0";
       }

Fetching images via HTTP/FTP

TFTP can be extremely slow, so PXELINUX allows you to fetch data (such as a kernel and initial ramdrive) over http - a technique first pioneered by gPXE its more recent iPXE fork. Older versions of PXELINUX supported this by using a hybrid bootloader that also contained gPXE/iPXE, with such images named either gpxelinux.0 or ipxelinux.0. Since 5.10, PXELINUX has native support for the feature.

To enable native http/ftp support, you must use lpxelinux.0 in place of "pxelinux.0". If you try to use pxelinux.0 (without the letter "l" prefix) without iPXE/gPXE running underneath then you'll get a "file not found" warning without any explanation as to the cause!

There's also a bug in the feature that can cause an "netconn_write failed: -5" error. This was fixed in the 6.02 release.

Example:

  LABEL linux-http
  LINUX http://boot-server/boot/mykernel
  APPEND initrd=http://boot-server/boot/myinitrd

What Happens When a Boot Fails?

If the boot fails, PXELINUX (unlike SYSLINUX) will not wait forever; rather, if it has not received any input for approximately five minutes after displaying an error message, it will reset the machine. This allows an unattended machine to recover in case it had bad enough luck of trying to boot at the same time the TFTP server goes down.

How do I keep the PXE stack loaded after boot?

Normally, PXELINUX will unload the PXE and UNDI stacks before invoking the kernel. In special circumstances (for example, when using MEMDISK to boot an operating system with an UNDI network driver) it might be desirable to keep the PXE stack in memory. If the option "keeppxe" is given on the kernel command line, PXELINUX will keep the PXE and UNDI stacks in memory. (If you don't know what this means, you probably don't need it.)

What Problems Are There Currently With PXELINUX?

Requires a TFTP server which supports the "tsize" option.

The error recovery routine doesn't work quite right. For right now, it just does a hard reset - seems good enough.

We should probably call the UDP receive function in the keyboard entry loop, so that we answer ARP requests.

Boot sectors don't work yet... they probably need auxilliary information (such as device) to work at all.

If you have additional problems, please contact the SYSLINUX mailing list. See the SYSLINUX FAQ for details. Before you post something, please make sure you have checked that your kernel files aren't named using the extensions which have special meaning:

 .0            PXE bootstrap program (NBP) [PXELINUX only]
 .bin          "CD boot sector" [ISOLINUX only]
 .bs           Boot sector [SYSLINUX only]
 .bss          Boot sector, DOS superblock will be patched in [SYSLINUX only]
 .c32          COM32 image (32-bit COMBOOT)
 .cbt          COMBOOT image (not runnable from DOS)
 .com          COMBOOT image (runnable from DOS)
 .img          Disk image [ISOLINUX only]

pxechain.com, as of PXELINUX 4.00, is broken. See also Common_Problems#pxechain.com.2FPXELINUX-4.00.2B.

PXE stack on a floppy

If your network card doesn't have a PXE boot ROM, there is are a couple of PXE stacks available.

Etherboot is a ROM kit that allows you to create your own PXE boot ROM (version 5.3.7 or later required), as well as make one that can be run from a boot floppy. The Etherbot home page is at: http://www.etherboot.org/

... and you can use ROM-o-matic to automatically create customized boot ROMs for your needs. 

http://rom-o-matic.net/ NetBoot is a ROM kit that may allow you to create your own PXE boot ROM, and possibly also run one from a floppy. It is available at: http://netboot.sourceforge.net/

A multi-hardware boot floppy is included with Windows Server 2000 and 2003. A company called Argon Technology used to offer a free-as-in-beer updated version, but is seems to have gone fully commercial. This floppy (which can also be burned to a CD using El Torito in floppy-emulation mode), is known to work with PXELINUX 2.03 or later only.

Deploy Linux from Windows WDS/RIS server using PXELinux

NOTE 1: For this I will use the Simple menu system only but it is easy to modify the following to use the vesamenu system or no menu.

NOTE 2: For WDS it is best to run it in Mixed Mode (makes life easier). or see WDSLINUX for setting up with WDS only

On RIS Server Create following folder structure:

       Setup\English\Images\PXELinux\i386\templates\pxelinux.cfg\
       Setup\English\Images\PXELinux\i386\templates\conf
       Setup\English\Images\PXELinux\i386\templates\knl
       Setup\English\Images\PXELinux\i386\templates\img

NOTE: Setup\English\Images is the location of the other RIS images. You can also change the name PXELinux to anything you want if for example you wish to have a seperate option in RIS for each distro you deploy.

Download the latest version of syslinux from: http://www.kernel.org/pub/linux/utils/boot/syslinux/

From Redhat AS4u3 CD1 (or cd of the distro you wish to deploy), in the directory images\pxeboot copy the following files into Setup\English\Images\PXELinux\i386\templates on the RIS server.

       vmlinuz
       initrd.img

Rename these files to:

       vmlinuz-<distro>-<arch>
       initrd-<distro>-<arch>.img

eg

       vmlinuz-rhas43-x86
       initrd-rhas43-x86.img
       

Place the renamed vmlinuz file in the folder \knl Place the renamed initrd.img file in the folder \img

NOTE: You must use the files vmlinuz and initrd.img from the distro version you intend to deploy (although sometimes you can get away with using older or newer ones for older / newer versions).

From the syslinux file downloaded extract the file "pxelinux.0" to Setup\English\Images\PXELinux\i386\templates on the RIS server.

In Setup\English\Images\PXELinux\i386\templates create a file "pxelinux.sif" and give it the following Contents:


       [OSChooser]
       Description = "Linux"
       Help = "This option runs a Linux installer."
       LaunchFile = "Setup\English\Images\PXELinux\i386\templates\pxelinux.0"
       ImageType = Flat
       Version="1.01"

In Setup\English\Images\PXELinux\i386\templates\pxelinux.cfg\ create a file called "default" and give it the following contents:


       # Default boot option to use
       DEFAULT menu.c32
       # Prompt user for selection
       PROMPT 0
       # Menu Configuration
       MENU WIDTH 80
       MENU MARGIN 10
       MENU PASSWORDMARGIN 3
       MENU ROWS 12
       MENU TABMSGROW 18
       MENU CMDLINEROW 18
       MENU ENDROW 24
       MENU PASSWORDROW 11
       MENU TIMEOUTROW 20
       MENU TITLE Main Menu
       # Menus
       # x86
       LABEL x86
         MENU LABEL 32Bit (x86)
         KERNEL menu.c32
         APPEND conf/x86.conf
       # x64
       LABEL x64
         MENU LABEL 64Bit (x64)
         KERNEL menu.c32
         APPEND conf/x64.conf

In Setup\English\Images\PXELinux\i386\templates\conf\ create a file called "x86.conf" (this will list all of our 32bit OS installs) and give it the following contents:


       # Default boot option to use
       DEFAULT menu.c32
       # Prompt user for selection
       PROMPT 0
       # Menu Configuration
       MENU WIDTH 80
       MENU MARGIN 10
       MENU PASSWORDMARGIN 3
       MENU ROWS 12
       MENU TABMSGROW 18
       MENU CMDLINEROW 18
       MENU ENDROW 24
       MENU PASSWORDROW 11
       MENU TIMEOUTROW 20
       MENU TITLE 32Bit (x86) OS Choice
       # Return to Main Menu
       LABEL MainMenu
         MENU DEFAULT
         MENU LABEL ^Main Menu
         KERNEL menu.c32
       #
       # Blank boots
       #
       LABEL linux-43
         MENU LABEL ^Blank Boot 4.3
         KERNEL knl/vmlinuz-rhas43-x86
         APPEND initrd=initrd=img/initrd-rhes43-x86.img

In Setup\English\Images\PXELinux\i386\templates\conf\ create a file called "x64.conf" (this will list all of our 64bit OS installs) and give it the following contents:


       # Default boot option to use
       DEFAULT menu.c32
       # Prompt user for selection
       PROMPT 0
       # Menu Configuration
       MENU WIDTH 80
       MENU MARGIN 10
       MENU PASSWORDMARGIN 3
       MENU ROWS 12
       MENU TABMSGROW 18
       MENU CMDLINEROW 18
       MENU ENDROW 24
       MENU PASSWORDROW 11
       MENU TIMEOUTROW 20
       MENU TITLE 64Bit (x64) OS Choice
       # Return to Main Menu
       LABEL MainMenu
         MENU DEFAULT
         MENU LABEL ^Main Menu
         KERNEL menu.c32
       #
       # Blank boots
       #
       LABEL linux-43
         MENU LABEL ^Blank Boot 4.3
         KERNEL knl/vmlinuz-rhas43-x64
         APPEND initrd=img/initrd-rhes43-x64.img

Now if you Boot to your RIS server, on the OS list screen you should see one called Linux. Choosing this will boot PXELinux and take you to the main menu to choose your arch type and then the distro you would like to install.

Using the new SYSLINUX features for vesamenu can make for a very easy to use and pleasant interface.

Custom Menu Example with sub-menus

Many advanced options here. Read full documentation on Syslinux to understand it all.

Its password protected from modification during PXE boot, very useful to prevent tampering.

Note: this example uses the legacy way to generate submenus, which is compatible with older SYSLINUX versions. SYSLINUX 3.62 supports a slightly different syntax, which is faster and somewhat more flexible.


Directory Structure:


    /tftpboot/
    /tftpboot/memdisk
    /tftpboot/pxelinux.0
    /tftpboot/menu.c32
    
    /tftpboot/pxelinux.cfg/
    /tftpboot/pxelinux.cfg/default
    /tftpboot/pxelinux.cfg/graphics.conf
    /tftpboot/pxelinux.cfg/fixes.menu
    /tftpboot/pxelinux.cfg/setup.menu
    
    /tftpboot/TRK/
    /tftpboot/TRK/chkdsk.trk
    /tftpboot/TRK/initrd.trk
    /tftpboot/TRK/kernel.trk
    
    /tftpboot/Memtest/memtest.x86
    
    /tftpboot/Suse/
    /tftpboot/Suse/initrd92
    /tftpboot/Suse/linux92
    
    /tftpboot/Floppy/
    /tftpboot/Floppy/kbfloppy.img
    

/tftpboot/pxelinux.cfg/default

    default menu.c32
    prompt 0
    
    menu title PXE Special Boot Menu
    menu INCLUDE pxelinux.cfg/graphics.conf
    MENU AUTOBOOT Starting Local System in # seconds
    
    label bootlocal
      menu label ^Boot Point of Sale
      menu default
      localboot 0
      timeout 80
      TOTALTIMEOUT 9000
    
    LABEL FixesMenu
      MENU LABEL ^Fixes Menu
      KERNEL menu.c32
      APPEND pxelinux.cfg/graphics.conf pxelinux.cfg/fixes.menu
            
    LABEL SetupMenu
      MENU LABEL ^Setup Menu
      KERNEL menu.c32
      APPEND pxelinux.cfg/graphics.conf pxelinux.cfg/setup.menu
    

/tftpboot/pxelinux.cfg/graphics.conf

    menu color tabmsg 37;40      #80ffffff #00000000
    menu color hotsel 30;47      #40000000 #20ffffff
    menu color sel 30;47      #40000000 #20ffffff
    menu color scrollbar 30;47      #40000000 #20ffffff
    MENU MASTER PASSWD yourpassword
    MENU WIDTH 80
    MENU MARGIN 22
    MENU PASSWORDMARGIN 26
    MENU ROWS 6
    MENU TABMSGROW 15
    MENU CMDLINEROW 15
    MENU ENDROW 24
    MENU PASSWORDROW 12
    MENU TIMEOUTROW 13
    MENU VSHIFT 6
    MENU PASSPROMPT Enter Password:
    NOESCAPE 1
    ALLOWOPTIONS 0
   

Set ALLOWOPTIONS to 1 if you want to be able to edit any of the entries while booted with PXE on the menu system. If you might want that for testing but once its final I like it set to 0. Also set NOESCAPE to 0 for the same reasons.


/tftpboot/pxelinux.cfg/fixes.menu

    MENU TITLE Fixes Menu
    
    LABEL MainMenu
      MENU LABEL ^Return to Main Menu
      KERNEL menu.c32
      APPEND pxelinux.cfg/default
    
    label fsck
      menu label ^File system check
      kernel TRK/kernel.trk
      append initrd=TRK/chkdsk.trk ramdisk_size=32768 root=/dev/ram0 vga=0
    
    label memtest
      menu label ^Memory Test: Memtest86+ v1.65
      kernel Memtest/memtest.x86
    
    label trk3
      menu label ^Trinity Rescue Kit
      kernel TRK/kernel.trk
      append initrd=TRK/initrd.trk ramdisk_size=32768 root=/dev/ram0 vga=0 trknfs=IPADDR:/trk ip=::::::dhcp splash=verbose


/tftpboot/pxelinux.cfg/setup.menu

    MENU TITLE Setup Menu
    
    LABEL MainMenu
      MENU LABEL ^Return to Main Menu
      KERNEL menu.c32
      APPEND pxelinux.cfg/default
    
    label setupkb
      menu label ^Any floppy disk image
      kernel memdisk
      append initrd=Floppy/kbfloppy.img
    
    label linux
      MENU PASSWD yourpassword
      menu label Install - ^Classic
      kernel Suse/linux92
      append initrd=Suse/initrd92 ramdisk_size=65536 vga=0 textmode=1 install=http://IPADDR serverdir=/9.2/install
autoyast=http://IPADDR/9.2/scripts/ay92.xml
    
    label trkclone
      MENU PASSWD yourpassword
      menu label Install - ^Faster
      kernel TRK/kernel.trk
      append initrd=TRK/initrd.trk ramdisk_size=65536 root=/dev/ram0 vga=0 install=Y trknfs=IPADDR:/trk
ip=::::::dhcp splash=verbose
    
    label linuxfull
      MENU PASSWD yourpassword
      menu label Install - ^Developer
      kernel Suse/linux92
      append initrd=Suse/initrd92 ramdisk_size=65536 vga=0 textmode=1 install=http://IPADDR serverdir=/9.2/install 
autoyast=http://IPADDR/9.2/scripts/develdesktop.xml

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