BCD on The Energetic Partition - House-Siam Real-Estate Aggregator in Thailand

The Windows Boot Manager (BOOTMGR) is the bootloader supplied by Microsoft for Windows NT versions starting with Home windows Vista and Windows Server 2008. It is the primary program launched by the BIOS or UEFI of the computer. [1] It replaced the NTLDR current in older versions of Home windows. Is accountable for loading the remainder of Windows.

"AUD" The boot sector or UEFI masses the Home windows Boot Manager (a file named BOOTMGR on both the system or the boot partition), accesses the Boot Configuration Knowledge store and uses the information to load the operating system by winload.exe or winresume.exe on BIOS programs, and winload.efi and winresume.efi on UEFI programs.[2]

Launching
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On system with BIOS firmware, the BIOS invokes MBR boot code from a hard disk drive at startup. The MBR boot code. The VBR boot code tries to search out. In Microsoft Windows, the MBR boot code tries to search out an lively partition (the MBR is just 512 bytes), then executes the VBR boot code of an active partition. The VBR boot code are OS-specific. [3] Execute the bootmgr file from an energetic partition.

On techniques with UEFI firmware, UEFI invokes bootmgfw.efi from an EFI system partition at startup, starting the Home windows Boot Manager. Choices to resume Home windows Vista. Before Windows Vista, this data was contained in boot.ini. Later by invoking winload.exe.exe. Later from hibernation by invoking winresume.exe.exe. Once launched the Home windows Boot Supervisor reads the Boot Configuration Data to determine what working methods are current. If it should present the person with a menu allowing them to pick out which operating system as well. Choices as well Home windows Vista.

Choices besides a prior model of the Windows NT household by invoking its NTLDR. Options to load. To execute a quantity boot document.

Operating system loading
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See additionally: Booting process of Windows § Windows NT
The operating system is loaded by individual boot loaders for each set up of Home windows, known as the Home windows Boot Loader.

winload.exe
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The Home windows Boot Manager invokes winload.exe-the working system boot loader-to load the working system kernel govt (ntoskrnl.exe) and core gadget drivers. In that respect, winload.exe is functionally equal to the operating system loader perform of NTLDR in prior versions of Windows NT. In UEFI methods, the file is called winload.efi and the file is at all times located at windowssystem32 or home windowssystem32boot. As well as, if Hyper-V is enabled, winload.exe or winload.efi will load hvix64.exe or hvax64.exe on x64 pc methods; later, ntoskrnl.exe is loaded.

winresume.exe
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If the pc has recently hibernated, then bootmgr will as a substitute invoke winresume.exe. In UEFI systems, the file is known as winresume.efi and is at all times located at home windowssystem32 or home windowssystem32boot.[4]

Boot Configuration Data
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BCD is a file that is used to store the configuration of Microsoft’s Windows Boot Supervisor. It’s the equivalent of NTLDR’s boot.ini or GNU GRUB’s grub.cfg.

For UEFI boot, the file is situated at /EFI/Microsoft/Boot/BCD on the EFI System Partition. For conventional BIOS boot, the file is at bootBCD on the lively partition.[5]

Boot Configuration Knowledge is stored in an information file that has the same format as Windows Registry hives and is ultimately mounted at registry key HKEY_Native_MACHINEBCD00000[6] (with restricted permissions[7]).

Boot Configuration Knowledge (BCD) is a firmware-unbiased database for boot-time configuration knowledge.[8]

The BCD itself is encoded with UTF-sixteen encoding.

A number of command-line device to edit this file have been made obtainable: bootrec, bcdboot and bcdedit.

bcdedit
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bcdedit

Developer Microsoft

Operating system Microsoft Home windows

Type Command

License Proprietary industrial software program

Webpage docs.microsoft.com/en-us/windows-server/administration/windows-commands/bcdedit
Boot Configuration Information may be altered using a command-line tool (bcdedit.exe), using the Registry Editor[6] (regedit.exe), using Windows Management Instrumentation, or with third-celebration instruments similar to EasyBCD, BOOTICE,[9] or Visible BCD Editor.[10]

Boot Configuration Data allows for third-party integration, so anyone can implement instruments akin to diagnostics or recovery choices.

bcdboot
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BCDboot can be utilized to set up a system partition or repair the boot atmosphere situated on the system partition. BCDBoot can create a Boot Configuration Data (BCD) retailer on the system partition utilizing the latest version of the Windows files.

bootrec
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bootrec is a command within the Windows Recovery Atmosphere that can be utilized to troubleshoot and restore points with an MBR, a boot sector, or a BCD file.[11]