{Urgent} Need help with boot selection recovery!

So recently i decided to give linux a try and heard that Ubuntu was a great starting point, with me being very uneducated in this field, i went ahead and installed ubuntu 12.04 LTS with the Wubi installer on a separate external HDD. Well within the last couple of days i have had no luck to get ubuntu working correctly at the start up! It will always provides me with an error statement when i try to load it up stating "missing or corrupted file: \ubuntu\winboot\wubildr.mbr" although i checked the directory and the file was in the correct folder and i have tried to replace the file! I have tried to re-install ubuntu (with wubi) many times but this does not seem to work. Anyways, with my frustration towards the installation of ubuntu i went to youtube to look for solutions and found this video: http://www.youtube.com/watch?v=6_92aKSu4Es
 i went into the command prompt and entered "bcdedit" then "bcdedit /delete {current}" (current was my identifier code). I thought this would solve the problem but it made it worst, now i no longer see the Windows 7 boot option! so i believe when i entered those commands to delete the current identifier that deleted the windows 7 boot option! I dont think that i damaged the OS but rather deleted the boot menu option for windows 7. Since then i have no idea how to get it back. please help i am very lost and any help is very appreciated!  I am wondering i some their is a command in ubuntu, once i install it correctly, if i can regain the windows 7 option in the Windows Boot Manager/Loader?

So after further review i was able to find a guide to help me: http://pcsupport.about.com/od/fixtheproblem/ht/rebuild-bcd-store-windows.htm Though i am getting stuck on step 5: Since the BCD store exists and lists a Windows installation, you'll first have to "remove" it manually and then try to rebuild it again.

At the prompt, execute the bcdedit command as shown and then press Enter:

bcdedit /export c:\bcdbackup
It gives me an error message saying: "The store export operation has failed. The requested system device cannot be found."

Question Info

Last updated August 3, 2019 Views 329 Applies to:

Hi Smitty,


Thank you for the detailed information.


Do you have a Window s7 installation disc with you?


Boot a Windows 7 install disc and launch Start Up repair, but cancel it before it starts trying to repair, you will see a link for Advanced Options, which will allow you to get to command prompt, and you will need to make the 100MB partition active if you made the OS partition active by mistake.


Go to Command Prompt from the recovery mode run the following command.


diskpart select disk 0 select part 1 active

Reboot and boot back into the Windows 7 install disc.

bcdedit /export C:\BCD_Backup


cd boot

attrib bcd -s -h -r

ren c:\boot\bcd bcd.old

bootrec /RebuildBcd


What are the system recovery options in Windows?



You can also refer to:



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