Windows 8 and 8.1 Forums


Re-Create or Re-Initialize Hidden Boot Partitions

  1. #11


    Posts : 1,121
    Windows 8.1 x64


    You said you wanted to re-initialize the System Partition. The commands work on the BCD store and reset those entries. The bootrec /rebuildbcd will check the listing and possibly repair a problem.

    The bcdboot command, and there are options you can use with this, will pretty much replace the bcd store. You can export the BCD store prior to running any commands. If you do export, then you can import that version back if you were to need it.

    You can look up the commands and see what they do.

    I think the entry for Boot Manger I suggested modifying is just there from another boot device... It may not be worth messing with it.

      My System SpecsSystem Spec

  2. #12


    Posts : 23
    Windows 8.1 Professional x64


    I tried to find bootrec, but it is not on my fully equipped Windows PE media. Where could I find this tool?
    Also, I was unable to find out how to delete/overwrite my existing BCD store. I created a new one, but that is not being picked up...
    I could not find options to delete the existing boot store in the BCD command line parameters either.
      My System SpecsSystem Spec

  3. #13


    Posts : 1,121
    Windows 8.1 x64


    The command is in one of the Recovery Tools images. I tried to use WinPE to run it also but was not able to do so until I replaced the boot.wim with a renamed winre.wim.

    If you had a Recovery Drive or the Install media, it would be there.
      My System SpecsSystem Spec

  4. #14


    Posts : 23
    Windows 8.1 Professional x64


    I did check my installation media. There's only two WIM files in it, boot.wim and install.wim. This is the latest Windows 8.1 with Update ISO image, official from Microsoft. Where exactly can I find this winre.wim file?
      My System SpecsSystem Spec

  5. #15


    Posts : 1,121
    Windows 8.1 x64


    The Winre.wim file is probably in the Install.wim file, which means you would have to mount the image to retrieve it. There may be versions other places, but they are usually designated as Hidden System files and your system has to be set up to see them.

    I do not know how to mount an image, but it probably won't make any difference anyway.

    Have you tried selecting the Other Windows Boot Manager showing in the BCD store listing?

    I don't suppose you have thought about extending the OS partition?

    The bootrec command would also be available if you use the Advanced Recovery menu, but I don't remember if you can even get to that.
      My System SpecsSystem Spec

  6. #16


    Posts : 23
    Windows 8.1 Professional x64


    The "Other Windows Boot Manager" cannot be selected at any time. It is invisible on the boot menu, as far as I can tell.

    Extending the OS partition, regretfully, does not solve the problem. Already tried that! So its not the free space issue either.
      My System SpecsSystem Spec

  7. #17


    Posts : 23
    Windows 8.1 Professional x64


    winre.wim was not contained inside the install.wim file either...
      My System SpecsSystem Spec

  8. #18


    Posts : 1,121
    Windows 8.1 x64


    It seems to be in mine. From the attachment, you can see it is in the Windows\System32\Recovery folder. Again, you do have to set your system to not hide Protected System files in the folder View Options.

    Click image for larger version
      My System SpecsSystem Spec

  9. #19


    Posts : 23
    Windows 8.1 Professional x64


    Oh, I was using the command line, where dir failed to find it, which would be the case if it was a hidden file.

    Anyways, in the meanwhile, I did boot from a Windows setup USB stick, and I did run /rebuildbcd.

    The initial delay in showing the boot menu appears to have been solved!

    However, the very long delay upon selecting my VHD boot file is still present.
      My System SpecsSystem Spec

  10. #20


    Posts : 23
    Windows 8.1 Professional x64


    By the way...it did report 0 operating systems found, for what its worth!
      My System SpecsSystem Spec

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Re-Create or Re-Initialize Hidden Boot Partitions
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