Failed bootable USB creation


  1. Posts : 3
    Windows 7 64
       #1

    Failed bootable USB creation


    Hi all,

    I tried to create a bootable USB using the info here: How to make a hard drive bootable? - Forums - CNET

    I am now able to partially boot from the USB, but I cannot boot from the HD anymore. When I remove the USB, I get a Windows Boot Manager error that Windows failed to start. I get:

    File: \Boot\BCD
    Status: 0xc000000f
    Info: An error occurred while attempting to read the boot configuration data.

    I assume I did something wrong in creating the USB or somehow changed the machine so it will no longer boot from the hard drive.

    A little help please...
      My Computer


  2. Posts : 12,012
    Windows 7 Home Premium SP1, 64-bit
       #2

    Have you tried to run System Repair?

    I'm not sure what "partially boot" means.
      My Computer


  3. Posts : 3
    Windows 7 64
    Thread Starter
       #3

    Yes, I have tried System Repair, but it will not run. By "partially boot" I mean I get into system Recovery Options, but it won't allow me to use them.
      My Computer


  4. Posts : 13,576
    Windows 10 Pro x64
       #4

    Are you saying you are trying to boot Windows 7 from an external usb hard drive ?

    Please explain.
      My Computer


  5. Posts : 2,774
    Windows 7 Professional 64-bit
       #5

    AddRAM said:
    Are you saying you are trying to boot Windows 7 from an external usb hard drive ?...
    AddRAM, I found this comment from the opener:
    "...I assume I did something wrong in creating the USB or somehow changed the machine so it will no longer boot from the hard drive..." Very likely, thread starter would like to be able to boot either from the internal hard-drive or from the usb device but not booting Windows 7 from the usb, that's my guess.
      My Computer


  6. Posts : 13,576
    Windows 10 Pro x64
       #6

    Or if he indeed is just trying to create a usb installer, he`ll have to clarify better.

    If that`s the case then just use Rufus

    https://rufus.akeo.ie/
      My Computer


  7. Posts : 3
    Windows 7 64
    Thread Starter
       #7

    Fixed it with...

    bcdboot.exe D:\Windows /s C:
      My Computer


  8. Posts : 2,774
    Windows 7 Professional 64-bit
       #8

    reg112 said:
    Fixed it with... bcdboot.exe D:\Windows /s C:
    What happens with that command? I'd like to learn the technicals of this command :)
      My Computer


  9. Posts : 12,012
    Windows 7 Home Premium SP1, 64-bit
       #9

    https://msdn.microsoft.com/en-us/win...ons-techref-di

    In this case, it copied boot files from D Windows to C.
      My Computer


  10. Posts : 13,576
    Windows 10 Pro x64
       #10

    RolandJS said:
    reg112 said:
    Fixed it with... bcdboot.exe D:\Windows /s C:
    What happens with that command? I'd like to learn the technicals of this command :)
    It does the same thing startup repair would do, writes the system files to C and I guess it may mark that partition Active.

    PM Wolfgang the author, he`s always been helpful to me :)
      My Computer


 

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