Windows NT Startup Process - Boot Loader Phase

Boot Loader Phase

Windows NT startup process starts when the computer finds a Windows boot loader, a portion of Windows operating system responsible for finding Microsoft Windows and starting it up. On IA-32 or x64 systems, the boot loader is called Windows Boot Manager (BOOTMGR). Prior to Windows Vista however, the boot loader was NTLDR. Microsoft has also released operating systems for Intel Itanium processors which use IA-64 architecture. The boot loader of these editions of Windows is IA64ldr.efi (later referred as simply IA64ldr). It is an Extensible Firmware Interface (EFI) program.

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