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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.
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.
Windows RE is installed alongside Windows Vista and later, and may be booted from hard disks, optical media (such as an operating system installation disc) and PXE (e.g. Windows Deployment Services). [23] A copy of Windows RE is included in the installation media of the aforementioned operating systems. It is a successor to the Recovery Console.
At boot time, a workstation that has been set to boot from PXE will issue a BOOTP request via the network. Once the request is received, the DHCP Server will supply an IP address to the machine, and the DNS server will point the client computer to the RIS server, which in turn will issue a disc boot image (often called the "OS Chooser").
This boot image also needs the appropriate network and disk controller drivers as with the Windows PE Capture boot image. The system is booted using PXE network booting and the Windows PE Apply image is loaded. The operator logs on to the domain, and selects the boot image to apply. A disk partitioning screen appears and the location for the ...
SDI usually contains either Disk BLOB (HD cloning or temporary SDI) or three other of them (bootable SDI). Windows Vista or Windows PE 2.0 boot sequence includes a boot.sdi file, which contains Part BLOB for an empty NTFS volume and a Table-of-Contents slot for the WIM image, which is stored on a separate on-disk file.
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 ...
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 ...