Preboot Execution Environment (PXE) is a technology that allows a computer to boot from a network without using a local storage device. It uses a set of standard protocols, such as DHCP and TFTP, to obtain an IP address, a boot file, and a software image from a server. PXE can be used for various purposes, such as:
• Installing or updating operating systems on multiple computers remotely and efficiently.
• Booting diagnostic or recovery tools to troubleshoot or repair system issues.
• Booting live operating systems or applications without modifying the local disk.
• Booting embedded or IoT devices that have limited or no local storage.
PXE is supported by most network interface cards (NICs) and firmware, such as BIOS or UEFI. To use PXE, you need a PXE-enabled NIC, a DHCP server, a TFTP server, and one or more file servers that contain the desired software images and configuration files.