My Windows 8 laptop has a boot problem. When Windows tries to boot, I get this error message:

Boot configuration data is missing  
File: \BCD  
Error code: 0xc0000034  

So as suggested I booted to the console and tried:

bootrec /fixmbr
bootrec /fixboot
bootrec /scanos
bootrec /rebuildbcd

After the last command I got:

Total identified win installations:1
[1] C:\Windows 
Add installation to boot list? 

I typed y so I want to add installation, but got a reply:

The requested system device cannot be found. 

As a solution I found a diskpart - select and activate OS partition, so I selected OS partition and typed:


I got a reply that:

The selected disk is not a fixed MBR disk. 
The active command can only be used on fixed MBR disks. 

How to fix this problem, to get Windows 8 boot properly? My laptop is a repair of a previously working PC.

  • Try using: BCDboot c:/windows /s c: /l en-us
    – Pretzel
    Nov 13, 2013 at 15:00
  • 1
    Boot files successfully created but Windows won't boot anyway, still get same error.
    – martin
    Nov 13, 2013 at 15:39
  • Did you try the initial sequence of commands you tried previously afterwards?
    – Pretzel
    Nov 13, 2013 at 15:41
  • 1
    Yes, with same result. bootrec /rebuildbcd returns "The requested system device cannot be found. " and after rester Windows won't boot
    – martin
    Nov 13, 2013 at 15:49

5 Answers 5


This page helped me restore the BCD on my Intel RSTe Raid SSD Configuration for Windows 7, on UEFI ASRock X79 Extreme 9 after upgrading the Bios.

list disk
select disk 0 #Select the desired disk
create partition efi size=100
list partition #Make sure that the 100mb partition is selected
format quick fs=fat32 label="System"
assign letter=B
create partition msr size=128
list partition #Check for errors
list vol
select vol 3 #Use the number corresponding to your windows installation
assign letter=C

Now copy the EFI files by typing:

mkdir B:\EFI\Microsoft\Boot
xcopy /s C:\Windows\Boot\EFI\*.* B:\EFI\Microsoft\Boot

Now we will set the boot configuration data by typing:

cd EFI\Microsoft\Boot
bcdedit /createstore BCD
bcdedit /store BCD  /create {bootmgr} /d “Windows Boot Manager”
bcdedit /store BCD /create /d “Windows 7” /application osloader
#This will return a GUID, referred to later as {guid}
bcdedit /store BCD /set {bootmgr} default {guid}
bcdedit /store BCD /set {bootmgr} path \EFI\Microsoft\Boot\bootmgfw.efi
bcdedit /store BCD /set {bootmgr} displayorder {default}
#Now it's not {bootmgr} anymore but {default}!
bcdedit /store BCD /set {default} device partition=c:
bcdedit /store BCD /set {default} osdevice partition=c:
bcdedit /store BCD /set {default} path \Windows\System32\winload.efi
bcdedit /store BCD /set {default} systemroot \Windows

Credit to: http://www.hasper.info/repair-a-destroyed-windows-7-uefi-boot-sector/

  • 1
    your method did showed Windows Boot manager for me, but it was not able to boot into Windows 8.
    – itsho
    Feb 10, 2015 at 15:56

This happened to me for the second time earlier today and I was getting the hardware can't be found error using just bootrec so I shall talk you through the steps I used.

Entering the following commands into the recovery terminal on the installation media disk. The first set fix the Master Boot Record (MBR) and the Bootsectors.

bootrec.exe /fixmbr
bootsect.exe /nt60 all /force

I then attempted to rebuild the Boot Config Data (BCD)

bootrec.exe /rebuildbcd

This solved it for me, however if you need further steps, then the information I have used (and more) can be found on this website.

  • 1
    Hello! While this link may provide a solution, link-only answers are a no-no. Please include pertinent information directly in your answers and cite the site as a source. Apr 20, 2014 at 16:46
  • @techie007 Hi. I'm sorry and I wasn't aware of this. Hopefully the edit I've made is sufficient.
    – Harvey
    Apr 20, 2014 at 16:57

When I tried to refresh computer (after no solution found), I get error saying something like:

PC can't be refreshed, because your disk is locked.

So I tied to unlock HDD as this tutorial say but with Windows 8 installation disc.

I choose to install, after few seconds error:

Bad serial number ...

I submitted this window by clicking OK button. After submitting I choose

Turn off computer

in Windows installation menu. After turning off and powering up everything was working great, no other steps required


I know I'm late to the party but if everything else fails you can run :

Bcdboot c:\windows /s c: /f UeFI /v

Use /f bios /v if it's a MBR disk


Try this:

1.Insert your Installation Disk

2.Go to repair Windows

3.Command Prompt

4.type in this:

"BootRec.exe /rebuildbcd" and press enter, then type in "BootRec.exe /fixmbr" and press enter, and finally type in "BootRec.exe /fixboot" and press enter. Now restart the PC and try it.

  • /rebuildbcd returned me 'The requested system device cannot be found.' But I wrote solution above... Thanks for answer anyway.
    – martin
    Nov 14, 2013 at 17:26

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.