How to enable/disable windows boot manager

Windows Boot Manager is used lớn load several operating systems. So how vị we enable or disable Windows Boot Manager in Windows 10? If there’s something wrong with Windows Boot Manager, how vị we fix it? This article will help you out!

1. What is Windows Boot Manager?

2. How khổng lồ Enable or Disable Windows Boot Manager in Windows 10?

● Solution 1: Enable or disable Windows Boot Manager with Command line

● Solution 2: Enable or disable Windows Boot Manager via system properties

3. How lớn add or remove operating system in Windows Boot Manager?

4. How to lớn fix Windows Boot Manager?

● Startup Problem

● System Files Lost/Corrupted

5. How to lớn use Renee PassNow to lớn create administrator tài khoản offline?


Windows Boot Manager (BOOTMGR) is a utility that boots operating systems. If you have several operating systems, you can enable Windows Boot Manager when the computer boots và then select the target operating system.

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Step 3: When the “System Properties” pops up, select “Advanced” option. Then cliông chồng “Settings” under “Startup and Recovery”.
Step 4: Next, check the box “Time to display các mục of operating systems” và set the time value. Cliông chồng “OK”.
Step 5: If you intkết thúc to lớn disable Windows Boot Manager, just uncheck the box “Time lớn display menu of operating systems” or mix the time value khổng lồ 0. Click “OK”.

Generally, system is automatically added after installing it. Or you can add it manuallywithmethodbelow. Please note that this solution requires administrator privilege khổng lồ perform. If you don’t have sầu an administrator account, it’s recommended lớn use Renee PassNowto lớn create it.


Step 1: Type “cmd” in tìm kiếm box, right cliông xã the comm& prompt & select “Run as administrator”.
Step 2: Type following commands in order. Please rethành viên to lớn press “Enter” after you type each comm&.
bcdedit /create ntldr /d “Windows XP”

Note: The value “Windows XP” can be replaced with another system that you want lớn add.


bcdedit /phối ntldr device partition=C:

Note: Here C: means that the system locates in C: drive. Please fill in the drive letter of the partition where you installed your Windows.


bcdedit /phối ntldr mô tả tìm kiếm “Windows XP”

Note: The value “Windows XP” can be replaced with another system that you want to lớn add.


Windows XPhường will be added khổng lồ boot manager after executing above sầu commands successfully. Besides, if you want to lớn have sầu the target system ranked first in boot thực đơn, try the “bcdedit /displayorder ntldr /addfirst” comm&.

Similarly, this solution requires administrator privilege to lớn perkhung. If you don’t have sầu an administrator tài khoản, it’s suggested lớn use Renee Passnow to lớn create it.


Step 1: Type “cmd” in search box, right cliông chồng the comm& prompt and select “Run as administrator”. When the comm& prompt pops up, type in: bcdedit. Press “Enter”. Then find out the identifier of the system that you intend lớn remove.
Step 2: For example, you need to remove sầu Windows XPhường & the identifier is{ntldr}. Then you need to type in: bcdedit /delete{ntldr}.
Once the system is removed, it won’t boot. Please confirm the target system & the identifier that you need. Besides, the{current}identifier means the system you’re using.
If there’s something wrong with Windows Boot Manager, Windows usually can’t boot properly. And itwill lead to xanh screen when Windows boot.

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1. Boot Configuration Data. It is stored at BCD tệp tin. If there’s any problem with this tệp tin, the blue screen error (0xc000000f, 0xc0000225, 0xc0000034) will occur.


2. System files. If there’s problem with the system files such as bootmgr, an error message “Bootmgr is missing” will appear.


Step 1: Turn on the PC. Connect the bootable USB drive sầu lớn the computer. Then change the boot order in BIOS thiết đặt & have sầu the PC restarted from the USB drive.
Step 2: After the PC boot from USB drive, cliông xã “Repair your computer” in the bottom-left corner.
Step 3: When you enter Windows recovery environment, select “Troubleshoot”> “Advanced options”> “Commvà Prompt”.
Step 4: Once “Commvà prompt” pops up, type these commands in order: bootrec / fixmbr,bootrec / fixboot,bootrec / rebuildbcd. Please press “Enter” after you type each commvà.
Step 1: Repeat above sầu step 1/2. Then select “Troubleshoot”> “Advanced options”> “Commvà Prompt” after you enter Windows recovery environment.
Step 2: Once “Command prompt” pops up, type in: sfc /scannow. Press “Enter”.
The lost or corruption of System filescould be caused bythe missing or damaged MBR. In command prompt, type in: bootrec /fixmbr. And MBR will be fixed.
Select one option from > & <Create a Live CD>. Then, select <x64> or <x86> according to your computer. Next, click on <Download Now> to lớn tải về the licensed ISO. Remember lớn activate the software beforehvà. After that, click on <Create USB> to lớn create the boot media.

You will boot the target computer via a new created reset disk. Firstly, please hold a hot key to enter the BIOS thực đơn & put CD-ROM or Removable Devices as the first choice. Please click here khổng lồ know about how khổng lồ change the boot order of your computer. After changing it successfully, please remember khổng lồ save your setting and then restart your PC.


The created administrator account named “xugame.biz” with administrator rights, & its default password is “123456789”. You are able lớn change the password of target trương mục with this new created administrator.


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