For UEFI boot, the file is located at /EFI/Microsoft/Boot/BCD on the EFI System Partition. For traditional BIOS boot, the file is at /boot/BCD on the active partition.
Windows 10 Won’t Boot? Fix It With Startup Repair And Bootrec Commands
When using it, you are limited to storing one Windows Installer per USB drive (I.E. one Win XP and one Win Vista 7 or 10). The Multiple Windows Installer/PE options allow for storing more than one stock Windows Installer per drive. Generally, only unmodified Windows ISO files will work with this option. YUMI (Your Universal Multiboot Installer), is the successor to our MultibootISOs. YUMI makes it easy for anyone to create their very own custom All-In-One Multi use diagnostic USB PC Repair Toolkit.
To Rebuild Mbr
However, it is possible to boot and run your Windows Installers from UEFI. To switch between added Windows versions, navigate to the multiboot/win-directory (replacing win-directory with the Windows version you want to boot) on your USB. Once there, move the bootmgr, bootmgr.efi, and entire boot folder to the root of your USB drive. Then reboot, booting your computer from the UEFI compatible USB.
If all went well, it should boot straight into your chosen Windows Installer. The Single Windows Installer/PE options are most likely to work for both stock and modified ISO files.
- You cannot use tools like the Visual BCD Editor to correct the issue on the affected machine because of that as you cannot boot into Windows anymore.
- If what you do causes trouble, you will need that physical record to undo how you got in trouble.
- Restore to a good image has no effect on bios, which is separate from windows.
- Click next on the first screen of setup.
How to fix The Boot Configuration Data file is missing some required information error in Windows 7, 8, 8.1 and Windows 10? Your next best option is to try salvaging your data and then reinstalling Windows 10 and your applications. If you have your Windows 10 install media, you can boot from it, then perform a custom install. This will create an archive of the old installation called Windows.old. You can then recover your personal files from this folder.Make sure you perform a custom installthat migrates your Windows.old data.
On Windows 10 systems, you need to have the original installation media (DVD or USB drive) in order to access Command Prompt. Traditional YUMI is not natively UEFI capable.
Otherwise, all your data will be erased. If you are seeing an error such as Boot Manager is Missing, then the BOOTREC /RebuildBcd command might be able to fix it. This operation can also restore boot entries for older versions of Windows if you have a dual boot configuration. This command will attempt to write a new boot sector on the hard dll file disk if Windows detects damage.
Anybody who’s worked with the Registry knows that mistakes or errors can cause horrible problems, including total system failure. Working with BCD is the only aspect of Windows administration that is even more dangerous than working with the Registry. That’s because errors inevitably cause boot failures. The Windows Boot Manager invokes winload.exe—the operating system boot loader—to load the operating system kernel executive (ntoskrnl.exe) and core device drivers.