Windows 8 and 8.1 Forums


How to remove grub bootloader? please help!

  1. #11


    Posts : 1,121
    Windows 8.1 x64


    So, I have a new ACER Aspire 5600U all-in-one with Windows 8 pre-installed, Intel core i5 3230M, RAM 4 GB DDR3. For some reason I decided to return this PC to the supplier and get another one (this has nothing to do with the OS). Now have to fully restore the factory settings.
    Could you explain this a little? Do you have the Acer model you describe or an identical one? If you got another one from the factory, why is it necessary to restore the factory settings? You do need to run the BCDEDIT command with an all instead of firmware to see if what you need might be present.

    If you have a Windows 8 install on the hard drive, booting to the recovery media and running a Bootrec \rebuildBCD command should allow you to add the Windows install to the boot menu, since no Windows Boot Manager currently shows in the BCD store.

    If you still need to restore the factory settings, how are you doing that?

    If it would help any, the entry for the Windows Boot Manger is below. You do show this in your earlier listing.

    \EFI\Microsoft\Boot\bootmgfw.efi

      My System SpecsSystem Spec

  2. #12


    Moscow
    Posts : 8
    Windows 8


    Do you have the Acer model you describe or an identical one?
    Yes, I have exactly this Acer Aspire all-in-one 5600U. The model P/N is DQ.SNEER003.

    why is it necessary to restore the factory settings?
    When I was ordering this Acer, the vendor in their website claimed that the HDD is 1000GB. After purchase was made, I discovered that it was 500GB not 1000GB. I decided to return the Acer, and the vendor agreed but requested that the factory settings be restored. That's the actual story. So my task was to uninstall Fedora, restore factory settings. It turned out to be quite easy in Windows 8. But Grub is just hell of a problem!

    booting to the recovery media and running a Bootrec \rebuildBCD command should allow you to add the Windows install to the boot menu, since no Windows Boot Manager currently shows in the BCD store
    Yes, an attempt to use 'bootrec /rebuildbcd' was successful, and the windows bootloader was fixed. But, again, my problem is not that I can't use a Windows boot manager, but that I can't get rid of Grub manager.

    If you still need to restore the factory settings, how are you doing that?
    I can go to the Windows 8 recovery console, or if Windows is not bootable from the HDD, which also happened boot from the Recovery CD (not equal to the live USB recovery media). Then one of the recovery option in the menu is "Restore factory settings". I can still use it. But I'm scared to wipe the HDD and re-install Windows, because for that purpose I only have that recovery USB which I have just created myself. Not sure how it will work... Thanks for your concern!
      My System SpecsSystem Spec

  3. #13


    Posts : 1,121
    Windows 8.1 x64


    You can remove all the Fedora entries from the BCD Store, as I think SIW2 suggested. That should remove any reference to them. Run the full BCDedit /enum all command to see all the entries.

    If you need to, you can put a drive letter on the EFI System Partition with Diskpart and then check its contents. It will look something like the following, but yours will show folders for the entries you posted above.

    S:\>dir
    Volume in drive S has no label.
    Volume Serial Number is 0A4E-DB3C

    Directory of S:\

    10/29/2013 03:05 PM <DIR> EFI
    0 File(s) 0 bytes
    1 Dir(s) 74,207,232 bytes free

    S:\>cd efi

    S:\EFI>dir
    Volume in drive S has no label.
    Volume Serial Number is 0A4E-DB3C

    Directory of S:\EFI

    10/29/2013 03:05 PM <DIR> .
    10/29/2013 03:05 PM <DIR> ..
    10/29/2013 03:05 PM <DIR> Microsoft
    10/29/2013 03:10 PM <DIR> Boot
    0 File(s) 0 bytes
    4 Dir(s) 74,207,232 bytes free
    If you are still getting GRUB, and I do not know how, a Legacy of Linux on a GPT drive will install a 1 MB partition somewhere on the drive for a MBR. If you show that, you may need to remove it.
      My System SpecsSystem Spec

  4. #14


    Moscow
    Posts : 8
    Windows 8


    SIW2 and Saltgrass: many thanks to you!!! So this is the happy end of the story.

    First, I experimented with the Partition Guru, without much success. Then I exactly followed your advice with the BCDboot command. In the command prompt (Windows 8 recovery mode) I assigned letter "S" to the ESP partition. Then formatted it with the DiskPart. Then used BCDboot to add a "brand new" boot entry for Windows. It worked fine! The output from dir was correct. No more annoying Grub.

    THANKS AGAIN! I learnt a lot. By the way, I wonder: if I decide to install Linux (e.g. Fedora) on my next PC, can I use the EFI bootloader for that.
      My System SpecsSystem Spec

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How to remove grub bootloader? please help!
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