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Encyclopedia > Windows Vista startup process

This refers to the boot components for Windows Vista and Windows Server "Longhorn". Image File history File links Information_icon. ... Windows Vista is the name of the latest release of Microsoft Windows, a line of graphical operating systems used on personal computers, including home and business desktops, notebook computers, and media centers. ... Windows Server Longhorn is the codename for the next server operating system from Microsoft. ...


The Windows Vista Startup Process is the process by which Microsoft's Windows Vista operating system initializes. Microsoft Corporation, (NASDAQ: MSFT, HKSE: 4338) is a multinational computer technology corporation with global annual revenue of US$44. ... Windows Vista is the name of the latest release of Microsoft Windows, a line of graphical operating systems used on personal computers, including home and business desktops, notebook computers, and media centers. ... An operating system (OS) is a computer program that manages the hardware and software resources of a computer. ...

Contents

Booting Sequence

The sequence of booting Windows Vista is slightly different to any previous version of windows that uses the NT kernel. First, when the computer is switched on, either the BIOS or the EFI is loaded. In the case of a BIOS system, the MBR of the boot disk (this can be a hard drive or external media) is accessed, which in turn loads the boot sector of the relevant hard disk partition. This boot sector then loads the Windows Boot Manager (Filename:Bootmgr.exe) which accesses the Boot Configuration Data store and uses the information to load the final stage, the Operating System. Windows Vista is the name of the latest release of Microsoft Windows, a line of graphical operating systems used on personal computers, including home and business desktops, notebook computers, and media centers. ... The Windows NT operating system familys architecture consists of two layers (user mode and kernel mode), with many different modules within both of these layers. ... BIOS, in computing, stands for Basic Input/Output System also incorrectly known as Basic Integrated Operating System. ... The workings of the Extensible Firmware Interface The Extensible Firmware Interface (EFI) is a Specification developed by Intel aimed to replace the old Firmware Interface historically used by all IBM PC compatible personal computers. ... The master boot record (MBR), also the partition sector, in IBM PC architecture, is the 512-byte (1/2 kilobyte) boot sector, i. ... A boot sector is a sector of a hard disc, floppy disc, or similar data storage device that contains code for bootstrapping programs (usually, but not necessarily, operating systems) stored in other parts of the disc. ... An operating system (OS) is a computer program that manages the hardware and software resources of a computer. ...


Windows Boot Manager

The Windows Boot Manager reads the Boot Configuration Data and "displays an operating system selection menu"[1], and is thus, in some respects, equivalent to the boot selection menu functionality of NTLDR in prior versions of Windows NT. An NTLDR boot menu. ...


To maintain a consistent boot experience, on Extensible Firmware Interface systems, which also have a boot manager of their own, the Windows Boot Manager, and hence all of the installed Windows operating systems that can be booted using it, appear as a single entry on the EFI boot manager menu. (On EFI systems, the Windows Boot Manager is an EFI application stored on the EFI System Partition.) Microsoft only adds multiple entries to the Windows Boot Manager menu itself, and sets the timeout of the EFI boot manager to 2 seconds. The workings of the Extensible Firmware Interface The Extensible Firmware Interface (EFI) is a Specification developed by Intel aimed to replace the old Firmware Interface historically used by all IBM PC compatible personal computers. ... The EFI System Partition is a partition on a data storage device that is used by machines that adhere to the Extensible Firmware Interface. ...


winload.exe

winload.exe is the operating system boot loader. It is invoked by the Windows Boot Manager in order to load the operating system kernel (ntoskrnl.exe) and (boot-class) device drivers[1], and is in that respect functionally equivalent to (the operating system loader functionality of) NTLDR in prior versions of Windows NT. It has been suggested that this article or section be merged with cold boot. ... ntoskrnl. ... An NTLDR boot menu. ...


winload.exe is also the name of a spyware program, PC Tattletale. This program has nothing to do with the Windows Vista startup process.[2] A large number of toolbars, some added by spyware, overwhelm an Internet Explorer session. ...


Boot Configuration Data

Boot Configuration Data (BCD) is a database for boot-time configuration data. It replaces the boot.ini that was used by NTLDR, and is used by Microsoft's new Windows Boot Manager.[3] The term database originated within the computer industry. ... It has been suggested that this article or section be merged with cold boot. ... NTLDR (NT Loader) is the boot loader for Windows NT, including its later versions (2000/XP/Longhorn). ... An NTLDR boot menu. ...


Boot Configuration Data is stored in a data file (formatted in the same way as a Windows registry hive) that is located either on the EFI System Partition (on machines that use Extensible Firmware Interface firmware) or in BootBcd on the system volume (on machines that use IBM PC compatible firmware). In computing, the Windows registry is a database which stores settings and options for the operating system for Microsoft Windows 32-bit versions, 64-bit versions and Windows Mobile. ... The EFI System Partition is a partition on a data storage device that is used by machines that adhere to the Extensible Firmware Interface. ... The workings of the Extensible Firmware Interface The Extensible Firmware Interface (EFI) is a Specification developed by Intel aimed to replace the old Firmware Interface historically used by all IBM PC compatible personal computers. ... It has been suggested that this article or section be merged into Booting. ...


Boot Configuration Data may be altered using a command-line tool (bcdedit.exe) or by using Windows Management Instrumentation. This article or section is not written in the formal tone expected of an encyclopedia article. ...


Boot Configuration Data contain the menu entries that are presented by the Windows Boot Manager, just as boot.ini contained the menu entries that were presented by NTLDR. These menu entries can include:

  • Options to boot Windows Vista by invoking winload.exe.
  • Options to resume Windows Vista from hibernation by invoking winresume.exe.
  • Options to boot a prior version of Windows NT by invoking its NTLDR.
  • Options to load and to execute a Volume Boot Record.

Boot Configuration Data allows for third party integration so anyone can implement tools like diagnostics or recovery options. A Volume Boot Record (also known as a volume boot sector or a partition boot sector, although the latter is not strictly correct) is a type of boot sector, stored in a disc volume on a hard disc, floppy disc, or similar data storage device, that contains code for bootstrapping...


See also


What is the Boot Configuration Database? The Windows NT Startup Process is the process by which Microsofts Windows NT, Windows 2000, Windows XP and Windows Server 2003 operating systems initialize. ...



The Boot Configuration Database (BCD), which is also referred to as the BCD store, contains boot configuration parameters and controls how the operating system is started in Windows Vista. These parameters were previously stored in the Boot.ini file at the root of the active partition for BIOS-based PCs or in the nonvolatile RAM (NVRAM) for EFI based PCs, such as PCs based on the Itanium 64-bit processor. The BCD is a database used by Bootmgr. It contains the functions of boot.ini and is located in the boot folder on the active partition. The BCDEDIT.exe command line tool is provided to manage the entries in the BCD store, and is located in the WindowsSystem32 directory of the Windows Vista partition.



Directory of C:Boot 08/10/2006 02:56 PM <DIR> . 08/10/2006 02:56 PM <DIR> .. 08/10/2006 02:50 PM 36,864 BCD 08/10/2006 02:50 PM 262,144 BCD.LOG 08/10/2006 06:51 PM 29,696 BCD.LOG1 08/10/2006 08:22 AM <DIR> en-US 08/10/2006 11:22 PM 219,648 fixfat.exe 08/10/2006 11:22 PM 231,936 fixntfs.exe 08/10/2006 08:22 AM <DIR> Fonts 08/10/2006 11:37 PM 381,512 memtest.exe


References

  1. ^ a b Microsoft. Boot Configuration Data in Windows Vista.
  2. ^ PC Tattletale.
  3. ^ Microsoft. Boot Configuration Data Reference Documentation. Microsoft Platform SDK.

External links

  • EasyBCD is a freeware application used to configure and manage the BCD in a visual environment.
  • Vista Process Library

 
 

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