How to Repair Boot Errors.If you cant get to startup options by pressing F8 you will need to boot from XP cd and go to Recovery Console.Remove the nonsystem disk.How to repair UEFI Bootloader in Windows 8.In this article we will learn how to repair Windows 8 bootloader on a computer with UEFI.The corruption of the Windows 8 bootloader can occur after the installation of the second OS in Dual Boot configurations, be caused by the erroneous actions while failure recovering and for some other reasons.If the loader in Windows 8 on UEFI system is corrupted, its impossible to start the system or a blue screen with the following error appears The boot configuration data for your PC is missing or contains errors.File EFIMicrosoftBootBCDError code 0xc.All this can imply corruption or even total removal of Windows 8 loader configuration Boot Configuration Data BCD.Restoring the Windows XP registry to a bootable configuration General instructions and conventions If your system wont boot successfully, you may have a corrupted.In this article we will learn how to repair Windows 8 bootloader on a computer with UEFI.The corruption of the Windows 8 bootloader can occur after the.You wont be able to recover the BCD loader using bcdedit.When running this command, the following error appears The boot configuration data store could not be found.The requested system device cannot be found.The matter is that the BCD loader configuration in Windows 8 installed in UEFI mode is stored on a separate hidden EFI volume 1.C6955D5EDE4423F6/image-size/large?v=1.0&px=600' alt='Boot Up Repair Windows 8' title='Boot Up Repair Windows 8' />MB in size on FAT3.Bcdedit can not see it and, therefore, manage the loader configuration on it. 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So to recover the loader BCD configuration, you have to boot from the original installation Windows 8 DVD or a recovery disk or a special EFI bootable flash drive and open the command line choosing System Restore Troubleshoot Command Prompt or pressing ShiftF1.Start diskpart Display the list of disks in the system Select the disk with Windows 8 installed if there is one disk in the system, it will have zero index Display the list of volumes in the system In this example, you can see that the EFI volume it can easily be recognized by its size of 1.MB and FAT3. 2 file system has the index volume 1, and the boot volume with Windows 8 installed is volume 3.Assign any disk letter to the EFI volume Close diskpart Go to the bootloader directory in the hidden volume.Recreate the boot sector on the boot partition.Delete the current BCD configuration file by renaming it save the older configuration as a backup With bcdboot.BCD store again by copying the boot files from the system directory 1.C Windows l en us s k f ALLwhere C Windows is the path to the directory with Windows 8 installed.ALL means that the boot files have to be copied including those for UEFI and BIOS computers potential ability to boot in EFI and BIOS systemsl en us is a type of the system locale.By default, en us English USA is used.Now you have to restart your computer.Then in the list of bootable devices there appears Windows Boot Manager where you can choose desired operating system to start.How to enable the Advanced Boot Options menu at start up in Windows 8.When performing computer repair on a Windows based system, the one feature I really like is the Advanced Boot Options menu.By pressing the F8 key at start up, you would get the advanced boot option menu, where you could enable safe mode, boot logging, debugging, etc.With the fast start up options inside of Windows 8 and modern motherboards, getting to the boot options menu is really hard.Heres how to get the Advanced Boot Options menu back in Windows 8.Warning There is no default timer when the Advanced Boot Menu option is enabled in Windows 8 and the system will wait for user input every time it starts or restarts.This works great when trouble shooting Windows 8.You can also choose which Windows Boot Manager WBM you want to use, Standard Windows 8 or Legacy Windows 7, Vista.First thing we have to do is edit the Boot Configuration Data BCD store using an administrative command prompt and bcdedit.Bcdedit is a command line tool that modifies the boot configuration data store.The boot configuration data store contains boot configuration parameters and controls how the operating system is booted.It needs be run at an administrative command prompt.How to open a Command Prompt with Administrator privileges in Windows 8.How to enable disable the advanced boot options menu in Windows 8.The standard advanced boot options menu in Windows 8.The first thing we have to do is turn on the advanced boot options.Type or cut paste the following code into an administrative command prompt bcdedit set globalsettings advancedoptions true.To turn off the advanced boot options, type or cut paste the following code into an administrative command prompt bcdedit set globalsettings advancedoptions false.How to enable disable the legacy advanced boot manager in Windows 8.The legacy advanced boot options menu in Windows 8.This next step is will change which boot manager loads and is an option.If you want to boot using the older legacy boot manager used in Windows 7 and Vista, type or cut paste the following code into an administrative command prompt bcdedit set default bootmenupolicy legacy.To restore the boot menu to the default, type or cut paste the following code into an administrative command prompt.
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