This article describes PXE booting and Boot on LAN.

PXE (Preboot Execution Environment), also known as Boot on LAN, is a network boot technology that allows a computer to boot an operating system over the network, rather than from a local drive. This is especially useful in large-scale IT environments where centralized management and deployment are needed, such as in data centers or corporate networks.

Key Aspects of PXE (Boot on LAN)

1. Network-Based Booting:

   • PXE enables computers to boot from an operating system image stored on a server, instead of relying on a local hard drive or other storage devices.
   • This process requires a PXE-enabled network card and a compatible server configured to provide the necessary boot files.

2. How PXE Works:

   • When PXE is enabled, the computer, during boot-up, sends a request to the network to locate a PXE server.
   • The PXE server responds with the boot image files, typically sent over the TFTP (Trivial File Transfer Protocol).
   • Once the files are transferred, the computer loads the operating system from the network.

3. Uses of PXE:

   • Operating System Deployment: PXE is widely used to install operating systems on new or reformatted computers, especially in environments where many systems need identical setups.
   • Diskless Workstations: Allows systems without local storage to boot over the network and operate fully from network resources.
   • Maintenance and Recovery: PXE can be used to boot into a diagnostic or recovery environment when a computer's internal storage has issues.

4. Enabling PXE Boot:

   • You can enable PXE booting in the BIOS/UEFI settings. It’s often found under Boot Options or Network Boot settings, sometimes labeled as Boot on LAN.
   • Ensure that the network card is configured for PXE, and the computer is connected to a network with a PXE-enabled server.

Benefits of PXE (Boot on LAN)

• Centralized Management: IT administrators can deploy and maintain operating systems from a single server, reducing manual installation tasks.
• Rapid Deployment: Large numbers of systems can be set up quickly, making it ideal for corporate or educational environments.
• Diskless Solutions: Enables booting without a hard drive, which is beneficial for certain applications like virtual desktop infrastructure (VDI) or kiosk systems.

PXE streamlines the deployment and maintenance of operating systems across many devices and simplifies network-based boot processes.