![]() Boot Configuration Data Editor Frequently Asked Questions. What is the BCD store? The Boot Configuration Data (BCD) store contains boot configuration parameters and controls how the operating system is started in Microsoft. These parameters were previously in the Boot. BIOS- based operating systems) or in the nonvolatile RAM (NVRAM) entries (in Extensible Firmware Interface–based operating systems). You can use the Bcdedit. Windows. Bcdedit. Windows\System. 32 directory of the Windows Vista partition. Note. Even though this document focuses primarily on Windows Vista, this information applies to both Windows Vista and Windows Server 2. Note. For detailed command and option information at the command prompt, type bcdedit. ![]() ![]() For example, type bcdedit. CREATESTORE. Why was there a change to BCD from Boot. BCD was created to provide an improved mechanism for describing boot configuration data. With the development of new firmware models (for example, the Extensible Firmware Interface (EFI)), an extensible and interoperable interface was required to abstract the underlying firmware. This new design provides the foundation for a variety of new features in Windows Vista (for example, the Startup Repair tool and Multi- User Install shortcuts). Where is the BCD file located in the registry? BIOS- based operating systems. The BCD registry file is located in the \Boot\Bcd directory of the active partition. EFI–based operating systems. The BCD registry file is located on the EFI system partition. Can any user modify BCD? No. You need administrative credentials to modify BCD. What are the ways that I can modify BCD? Depending on what you want to change, you can use the following tools to modify BCD: Startup and recovery. The Startup and recovery dialog box enables you to select the default operating system to start if you have multiple operating systems installed on your computer. You can also change the time- out value. These settings are located on the Advanced tab in the System Properties dialog box. System Configuration utility (Msconfig. Msconfig. exe is a more advanced tool with capabilities that include the following options: /debug, /safeboot, /bootlog, /noguiboot, /basevideo, and /numproc. BCD WMI provider. The BCD Windows Management Instrumentation (WMI) provider is a management interface that you can use to script utilities that modify BCD. This is the only programmatic interface available for BCD. ![]() For more information, see Boot Configuration Data (BCD) at the Microsoft Web site (http: //go. Link. Id=5. 67. 92). BCDEdit. exe. BCDEdit. Bootcfg. exe in Windows Vista. For more information, see What can I do with Bcdedit. Note. You cannot use Bootcfg. BCD. However, Bootcfg. Why don’t I see any Windows entries in the EFI boot manager? And why are there two boot managers? All Windows entries are stored in the BCD store. On an EFI- based operating system, there is a single entry in the EFI firmware boot manager called “Windows Boot Manager”. ![]() This file is located in \EFI\Microsoft\Boot\Bootmgfw. If you start Windows Boot Manager using the EFI boot manager, you should get a common look and feel on both your EFI- based and PC/AT- based operating systems. For example, the advanced boot options menu should work. The default timeout for the EFI boot manager is 2 seconds to make it easier to boot back and forth between Windows Server 2. Service Pack 1 and Windows Vista. Can I install Windows Vista on a computer that already contains an operating system? Yes. You can install Windows Vista on a different partition. It is best to install Windows Vista after you install the older operating systems. Older operating systems will continue to use Boot. Should I replace the code that used to work with Boot. BCD on Windows Vista? No. You will need to alter your code so that it uses Boot. ![]() BCD on Windows Vista. In a multiboot environment, does modifying BCD on the pre- Windows Vista operating system modify the boot configuration? ![]() No. You need to modify BCD to alter the boot configuration for Windows Vista. You also need to modify Boot. BIOS- based operating systems) or NVRAM (for EFI- based operating systems) to alter boot configuration for the older operating systems. Can I disable BCD entirely when I am not booting to Windows Vista? No. The boot manager for Windows Vista runs first to determine which operating system to start. Therefore, if you want to boot to the older operating system, you must set the default order to the older operating system in the BCD store. For more information, see How to change the default operating system entry. What is Bcdedit. exe? You can use Bcdedit. Windows code which runs in the pre- operating system environment by adding, deleting, editing, and appending entries in the BCD store. From: Kan Yabumoto [email protected] To: XXCOPY user Subject: A better boot diskette for WinNT/2000/XP Date: 2005-07-16 (revised. Bcdedit. exe is located in the \Windows\System. Windows Vista partition. What can I do with Bcdedit. Bcdedit. exe currently enables you to do the following. Windows Boot Manager is basically a mini- operating system that controls your boot experience and enables you to choose which boot application to run. There are various boot applications (for example, Windows Boot Loader) and each one does something different. When a PC is powered on its BIOS follows the configured boot order to find a bootable device. This can be a harddisk, floppy, CD/DVD, network connection, USB-device. How to Boot to Command Prompt. Every Windows OS since Win95 has offered user access to boot via the Command Prompt. You've probably seen it before; it's the black. DOS Drivers For Reading, Copying, And Writing To NTFS Drives. I've assembled Two Methods for you to see and work with NTFS drives while in DOS or by booting with a. Boot Hirens Boot CD (HBCD) from USB as an ISO file. For example, a Windows Boot Loader application loads Windows. When you specify /enum, you will get the following. One Windows Boot Manager entry (because there is only one boot manager). For example, if you have two different versions of Windows Vista installed on different partitions, you will see two Windows Boot Loader entries. This entry is not a boot application, but instead uses NTLDR and Boot. Windows Vista. You will use this entry to boot into Windows Server 2. Windows XP, and earlier operating systems (if installed on the computer). Is there command- line Help for Bcdedit. Yes. For detailed command and option information at the command prompt, type bcdedit. For example, type bcdedit. CREATESTORE. How to change the global debugger settings. At the command prompt type: bcdedit /dbgsettings Debug. Type . Debug. Type can be one of SERIAL, 1. USB. The remaining options depend on the debugger type selected. Port. For SERIAL debugging, specifies the serial port to use as the debugging port. Baud. For SERIAL debugging, specifies the baud rate to be used for debugging. Channel. For 1. 39. Target. Name. For Universal Serial Bus (USB) debugging, specifies the USB target name to be used for debugging. Examples. The following command sets the global debugger settings to serial debuggingover com. The following command sets the global debugger settings to 1. CHANNEL 3. 2The following command sets the global debugger settings to USB debuggingusing target name . Type can be one of the following. ALLFor example, the following command lists all entries: bcdedit /enum all /v. How to change the default operating system entry. At the command prompt, type: bcdedit /default ID. IDSpecifies the default GUID to be used when the time- out expires. After this one- time boot it will revert back to the default boot order. Examples. The following command sets the specified operating system as the default for the next restart. After that restart, it will be reset to DISPLAYORDER. You must specify at least one ID. For more information about identifiers, type bcdedit /? ID. Examples. The following command sets three operating system entries in the boot manager display order: Bcdedit. If ID is not specified, the current boot entry ID will be deleted. If you specify a well- known GUID, you will have to force the deletion by specifying /f. For example: bcdedit /delete . If ID is not specified, it modifies the current boot entry ID. For example, the following command enables boot debugging for the specified operating system boot entry: bcdedit /debug ? ID. How to set Physical Address Extension (PAE)At the command prompt, type: bcdedit /set . If you do not specify ID, the current operating system settings will be modified. For example: bcdedit /set . Removememory removes memory from the total available memory that the operating system can use. If you do not specify ID, the current operating system settings will be modified. Truncatememory disregards all memory at or above the specified physical address. It does a better job of restricting the operating system to use the specified memory while accounting for memory holes. If you don't specify ID, the current operating system settings will be modified. If you do not specify ID, then the current operating system settings will be modified. For example: bcdedit /set . Use the new GUID to modify the partition information by specifying: bcdedit /set . To list entries, type: bcdedit /enum . Type can be one of the following: active (default). Lists all entries in the boot manager display order. Lists all firmware applications entries. Bootapp. Lists all boot environment applications entries. Bootmgr. Lists all Boot manager entries. Osloader. Lists all operating system entries. Inherit. Lists all inherit type entries. All. Lists all entries. Examples. The following command lists all operating system loader boot entries: bcdedit /enum osloader. The following command lists all boot manager entries: bcdedit /enum bootmgr. How to modify BCD when installing a previous version of Windows onto a computer running Windows Vista. To install an older Windows operating system on a computer running Windows Vista, use the following procedure. To install a previous version of Windows onto a computer running Windows Vista. Install the previous version of Windows. Log on to the older operating system and restore the latest boot manager by running the following. Fixntfs. exe will be in the \boot directory of the active partition. Create a BCD entry for the older operating system by specifying the following. Bcdedit. exe is located in the \Windows\System. Windows Vista partition. Description is the description of the new entry for the older operating system. Bcdedit /create . To do this, use the following procedure. In this procedure, the arcpath multi(0)disk(0)rdisk(0)partition(1) refers to the C: drive on the computer, and Boot. Boot. wim with Winload. How to Disable New Metro Boot Loader and Restore Classic Boot Loader in Windows 8 and Later? UPDATE: This tutorial will also work in Windows 8. One of the most interesting and impressive features introduced in Microsoft's latest OS Windows 8 is the new boot loader. Previous Windows versions used to contain a boot loader without a GUI. It was similar to Command Prompt screen where you could use the arrow keys present in your keyboard to select the desired OS to boot. Microsoft replaced this classic boot loader with a brand new boot loader in Windows 8 which is now called . It comes with a GUI and allows you to interact with your mouse as well. It provides various useful options such as troubleshoot PC startup problems, reset or repair Windows 8, restore Windows, disable device driver signature check, access Safe Mode and much more. You can read more info about this new boot loader in following article: How to Access and Use Windows 8 Metro Boot Loader and Advanced Boot Options? But there is one problem with this new boot loader which occurs when you dual boot between Windows 8 and any other previous Windows version such as Windows Vista or 7. If you have set Windows 8 as default boot entry in your system, first Windows 8 boots and the new Metro boot loader to select installed OS is shown after Windows 8 boot screen. It might become quite annoying if you want to boot into other Windows version. First you'll have to watch Windows 8 boot screen and then you'll be able to select previous Windows OS from new Metro boot loader. On the other hand in previous boot loader, no installed OS boots until you select it from the OS list in boot loader. It saves lots of time. Today in this article, we are going to tell you how to disable new Metro boot loader and bring back Windows Vista and 7 style boot loader in Windows 8. So if you also want to get Windows Vista and Windows 7 style classic boot loader back in Windows 8, follow these simple steps: 1. To disable new Metro boot loader we'll need to execute a command in Command Prompt. So first open Command Prompt as Administrator using following tutorial. Now type following command and press Enter: bcdedit /set . Restart your system and you'll see classic Windows Vista and 7 style boot loader in Windows 8. In case you want to re- enable Windows 8 Metro boot loader in future, simply execute following command in Command Prompt: bcdedit /set . Restart and you'll get the new Metro boot loader back in Windows 8. BONUS TIP: You can also try following special commands to tweak and customize Windows 8 Boot Screen and Boot Loader: To enable advanced options in Windows 8 boot menu: bcdedit /set.
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