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gPXE
Developer(s)	Etherboot project
Initial release	1995, 28–29 years ago^[1]^[2]

Final release	1.0.1 / 16 August 2011; 13 years ago (2011-08-16)

Written in	C
Type	Boot loader
License	GPLv2+
Website	etherboot.org

gPXE is an open-source Preboot eXecution Environment (PXE) client firmware implementation and bootloader derived from Etherboot. It can be used to enable computers without built-in PXE support to boot from the network, or to extend an existing client PXE implementation with support for additional protocols. While standard PXE clients use TFTP to transfer data, gPXE client firmware adds the ability to retrieve data through other protocols like HTTP, iSCSI and ATA over Ethernet (AoE), and can work with Wi-Fi rather than requiring a wired connection.

gPXE development ceased in summer 2010,^[3] and several projects are migrating^[4] or considering migrating^[5] to iPXE as a result.

PXE implementation

gPXE can be loaded by a computer in several ways:

from media like floppy disk, USB flash drive, or hard disk
as a pseudo Linux kernel
as an ELF image
from an option ROM on a network card or embedded in a system BIOS
over a network as a PXE boot image

gPXE implements its own PXE stack, using a driver corresponding to the network card, or a UNDI driver if it was loaded by PXE itself. This allows to use a PXE stack even if the network card has no boot ROM, by loading gPXE from a fixed medium.

Bootloader

Although its basic role was to implement a PXE stack, gPXE can be used as a full-featured network bootloader. It can fetch files from multiple network protocols,^[6] such as TFTP, NFS, HTTP^[7]^[8] or FTP, and can boot PXE, ELF, Linux, FreeBSD, multiboot, EFI, NBI and Windows CE images.

In addition, it is scriptable and can load COMBOOT and COM32 SYSLINUX extensions. This allows for instance to build a graphical menu for network boot.

References

^ "about — Etherboot/gPXE Wiki".
^ "Bringing PXE Boot to the 21st Century". Archived from the original on 2012-11-20.
^ ""gPXE is no longer actively maintained. Users should upgrade to iPXE."". Archived from the original on 2014-04-13. Retrieved 2010-11-30.
^ Xen ChangeLog showing migration to iPXE because "it is actively maintained"
^ KVM call minutes showing consideration of migration to iPXE
^ Google TechTalk demonstrates how to load operating systems from remote servers using gPXE
^ "Booting your machine over HTTP". Archived from the original on 2010-02-08. Retrieved 2009-12-23.
^ SliTaz web boot

External links

Firmware and booting

Processes

Windows
- 9x
- NT
Linux
- Android

Booting firmware

Types	Proprietary firmware Open-source firmware Custom firmware
Interfaces	UEFI BIOS Video BIOS Open Firmware ACPI MultiProcessor Specification APM Legacy Plug and Play AlphaBIOS SRM SFI
Implementations	SeaBIOS Award BIOS American Megatrends AMIBIOS AMI Aptio InsydeH2O Phoenix SecureCore UEFI TianoCore EDK II OpenBIOS Coreboot Libreboot LinuxBoot Kickstart Run-Time Abstraction Services

Hybrid firmware bootloader

Bootloaders

Implementations	Acronis OS Selector Barebox BootManager BootX (Apple) BootX (Linux) GNU GRUB iBoot systemd-boot loadlin NTLDR OpeniBoot RedBoot rEFInd rEFIt SYSLINUX Windows Boot Manager xOSL Yaboot Plop Boot Manager MILO

Partition layouts

Partitions

Utilities

Software	flashrom fwupd UEFITool Odin Heimdall
Hardware	Bus Pirate Raspberry Pi ft2232

Network boot

ROM variants

Categories:

Hidden categories:

PXE implementation

Bootloader

See also

References

External links