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2025-01-27 Update From: SLTechnology News&Howtos shulou NAV: SLTechnology News&Howtos > Servers >
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In view of how to fix the MBR problem on the computer of Windows 10, this article introduces the corresponding analysis and solution in detail, hoping to help more partners who want to solve this problem to find a simpler and easier way.
Sometimes, the master boot record (MBR) may be corrupted or misconfigured, causing Windows 10 to fail to load correctly,
The master boot record (MBR), sometimes referred to as the "master partition table", is the most important information that enables the computer to find and identify the location of the operating system that Windows 10 is allowed to boot.
Sometimes the master boot record is damaged due to viruses or other types of malware, system setting changes, or incorrect shutdown. You may even encounter a Bootmgr Is Missing error message that will prevent the computer from starting.
If you encounter such problems, you must fix MBR.
To fix MBR problems on computers running Windows 10, use the following steps:
1. Create a Windows 10 boot USB drive.
two。 Change the computer firmware settings to boot the computer from the USB disk.
Tip: to change the basic input output system (BIOS) or Unified Extensible firmware Interface (UEFI) settings, you usually need to press the following function keys: F1, F2, F3, F10, F12, ESC, or delete key. It varies from manufacturer to manufacturer and computer model. Please visit the manufacturer's support website for more specific instructions.
3. Click the next button in the Windows 10 installer.
4. Click the repair computer button in the lower left corner.
5. Click the troubleshooting Advanced options command prompt button.
6. Enter the command prompt environment, which will allow you to launch the Bootrec.exe tool to repair the master boot record on your Windows 10 computer. Bootrec.exe supports many options, depending on your situation.
Use the FixMbr option when you need to fix a corrupted master boot record or when you need to clear the code from MBR. This command does not overwrite the existing partition table on the hard drive.
Bootrec / fixMbr
Use the FixBoot option when the boot sector is replaced by another non-standard code, the boot sector is damaged or an earlier version of the operating system and another newer version are installed.
Bootrec / fixBoot
Use the ScanOS option when the Startup Manager menu does not list all operating systems installed on your computer. This option scans all drives for all compatible installations and displays entries that are not in BCD storage.
Bootrec / ScanOS
Use the RebuildBcd option when there are no other options, and you must rebuild the BCD (Boot configuration data) storage.
Bootrec / RebuildBcd
7. If you want to resolve the Bootmgr loss error and rebuilding the BCD storage will not solve the problem, export and erase the BCD storage using the following command, and use the RebuildBcd command again to repair the Windows 10 process.
"at a command prompt using the recovery environment, type the following command, and then press Enter on each line:"
BCDedit / export C:\ BCD_Backup C: CD boot Attrib BCD-s-h-r Ren C:\ boot\ bcd bcd.old Bootrec / RebuildBcd
Press Y to confirm that Windows 10 is added to the list of bootable operating systems on your computer.
8. Close the command prompt.
After completing these steps, restart the computer and Windows 10 will load normally.
If you are unsure of the problem with your computer, you should try using all the commands in this guide to see if they solve the problem so that you can start Windows 10 again.
Although the "bootrec" tool is sufficient to repair the master boot record, other related problems may require other command-line tools (such as Bootsect.exe or BCDboot), which you can choose to use as appropriate.
This is the answer to the question about how to fix MBR on the computer of Windows 10. I hope the above content can be of some help to you. If you still have a lot of doubts to be solved, you can follow the industry information channel for more related knowledge.
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