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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.
A high-level PXE overview. In computing, the Preboot eXecution Environment (PXE; often pronounced as / ˈ p ɪ k s iː / pixie, often called PXE boot (pixie boot), is a specification describing a standardized client–server environment that boots a software assembly, retrieved from a network, on PXE-enabled clients.
The boot loader on the option ROM would attempt to boot from a disk, network, or other boot program source attached to or installed on the adapter card; if that boot attempt failed, it would pass control to the previous boot loader (to which INT 19h pointed before the option ROM hooked it), allowing the system to boot from another device as a ...
iPXE is an open-source implementation of the Preboot eXecution Environment (PXE) client software and bootloader, created in 2010 as a fork of gPXE (gPXE was named Etherboot until 2008). [2] It can be used to enable computers without built-in PXE capability to boot from the network, or to provide additional features beyond what built-in PXE ...
It is intended to replace MS-DOS boot disks and can be booted via USB flash drive, PXE, iPXE, [1] CD, DVD, or hard drive. Traditionally used by large corporations and OEMs (to preinstall Windows client operating systems on PCs during manufacturing), it is now widely available free of charge via Windows Assessment and Deployment Kit (WADK ...
The client computer is set to boot from the network card using PXE or Etherboot. The client requests an IP address, and tftp image to boot from, both are provided by the DRBL server. The client boots the initial RAM disk provided by the DRBL server via tftp, and proceeds to mount an nfs share (also provided by the DRBL server) as its root ...
In contrast to the normal processor initialization [which involved the boot-strap-processor (BSP) sending a Start-up Inter-Processor Interrupt (SIPI) to each Application Processor, thus starting each processor in "real mode" and then transitioning to "virtual mode" and finally to "protected mode"], the operating system avoids that vulnerability ...
The TEE can be used by governments, enterprises, and cloud service providers to enable the secure handling of confidential information on mobile devices and on server infrastructure. The TEE offers a level of protection against software attacks generated in the mobile OS and assists in the control of access rights.