BCD或引导配置数据^{(Boot Configuration Data)}是一个安全敏感文件，它是一个独立于固件的数据库，用于引导时配置数据。BitLocker加密必须与BCD文件同步工作，并且每次用户启动机器时都会验证该文件。

使用BitLocker Drive Encryption Tool时，有时用户可能会在系统上遇到以下错误：

The BitLocker Setup failed to export the BCD (Boot Configuration Data) store, You may need to manually prepare your drive for BitLocker.

如果您遇到此问题，可以尝试以下三件事：

1]将分区标记为活动^{(1] Mark Partition as active)}

首先检查驱动器是否处于活动状态。为此，请从WinX 菜单^{(WinX Menu)}中打开磁盘管理^{(Disk Management)}并检查目标驱动器是否处于活动状态。如果没有，请右键单击它并选择Mark as Active。最后，在确认对话框中单击是。

2]修复MBR并重建BCD文件^{(2] Repair the MBR and rebuild the BCD file)}

BCD文件可能已损坏。您可以尝试修复 MBR^{(repair the MBR)}以及重建 BCD 文件^{(rebuild the BCD file)}，看看是否有帮助。

BCD的问题可以追溯到 3 种可能性。

3]使BCD指向正确的路径^{(3] Make BCD point to the correct path)}

如果引导配置数据^{(Boot Configuration Data)}( BCD ) 存储中的以下条目之一指向不正确的分区，也会出现此问题：

• Windows 启动管理器
• Windows 内存测试器
• 从休眠状态恢复

为了使Windows 启动管理器^{(Windows Boot Manager)}指向正确的分区，Microsoft建议执行以下操作。右键单击开始^(Start)并选择命令提示符^{(Command Prompt)}（管理员）。键入以下命令并按Enter执行它：

bcdedit -set {bootmgr} device partition=C:

其中C：是系统分区驱动器。

要使Windows 内存测试器^{(Windows Memory Tester)}指向正确的分区，请按照上一步中的说明打开命令提示符^{(Command Prompt)}（管理员）。键入以下命令并按Enter执行它：

bcdedit -set {memdiag} device partition=C:

其中C：是系统分区驱动器。

通过在命令提示符^{(Command Prompt)}（管理员）中执行以下命令，可以从Hibernate中恢复以指向正确的系统分区：

bcdedit -enum all

当您按下 Enter 时，它将显示Resume from Hibernate条目的详细信息。记下该信息的“标识符”值。然后输入以下命令：

bcdedit -set {identifier} device partition=C:

其中 {identifier} 是我们前面提到的标识符值，C: 是系统分区驱动器。

相关阅读^{(Related read)}：BitLocker 安装程序找不到要准备的目标系统驱动器。

BitLocker Setup failed to export the BCD (Boot Configuration Data) store

The BCD or Boot Confіguration Data is a security sensіtive file which is a fіrmware-indеpendent database for boot-time configuration data. BitLocker encryption has to work in sync with the BCD file and it vеrifies the file еvery timе the user boots the machine.

When using BitLocker Drive Encryption Tool, at times, users might encounter the following error on the system:

The BitLocker Setup failed to export the BCD (Boot Configuration Data) store, You may need to manually prepare your drive for BitLocker.

If you face this issue, here are three things you could try:

1] Mark Partition as active

First check if the drive is active. To do this, from the WinX Menu, open Disk Management and check if the target drive is active. If not, right click on it and select Mark as Active. Finally, click Yes on the confirmation dialogue box.

2] Repair the MBR and rebuild the BCD file

It that the BCD file could be corrupt. You could try and repair the MBR as well as rebuild the BCD file and see if that helps.

The issue with the BCD could be traced to 3 possibilities.

3] Make BCD point to the correct path

This problem can also occur if one of the following entries in the Boot Configuration Data (BCD) store points to the incorrect partition:

• Windows Boot Manager
• Windows Memory Tester
• Resume from Hibernate

To make the Windows Boot Manager point to the correct partition, Microsoft suggests the following. Right-click on Start and select Command Prompt (administrator). Type the following command and press Enter to execute it:

bcdedit -set {bootmgr} device partition=C:

Where C: is the system partition drive.

For making the Windows Memory Tester point to the correct partition, open Command Prompt (administrator) as mentioned in the previous step. Type the following command and press Enter to execute it:

bcdedit -set {memdiag} device partition=C:

Where C: is the system partition drive.

Resume from Hibernate could be made to point to the correct system partition by executing the following command in Command Prompt (administrator):

bcdedit -enum all

When you press Enter, it will show the details for the Resume from Hibernate entry. Note down the “identifier” value for that information. Then enter the following command:

bcdedit -set {identifier} device partition=C:

Where {identifier} is the identifier value we noted earlier and C: is the system partition drive.

Related read: BitLocker Setup could not find a target system drive to prepare.

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