Windows 10: Deleting Debian bootloader from Windows 10 EFI partition

Discus and support Deleting Debian bootloader from Windows 10 EFI partition in Windows 10 Support to solve the problem; Yes there is a way to restore EFI partition, but it is risky and not 100% it will always work... I installed debian as dual boot with Windows 10. I... Discussion in 'Windows 10 Support' started by empleat, Sep 1, 2020.

  1. empleat Win User

    Deleting Debian bootloader from Windows 10 EFI partition


    Yes there is a way to restore EFI partition, but it is risky and not 100% it will always work...

    I installed debian as dual boot with Windows 10. I was assured on their forums, it won't put grub to Windows 10 efi partition and i created its efi partition for it on second disk and here we go...

    When i mount efi partition using diskpart and than cd and go there... I can see folder called "debian" besides windows folder and other folders. Would it enough to just delete debian folder to safely remove its bootloader? I realize this is not best place to discuss debian, but i asked on debian forums, but they are meh...

    I don't know if everything related to debian is just in debian folder.
    Here is pic of dir, on my Windows 10 EFI partition, inside EFI folder.

    I didn't even wait for answer, because i am fed up with this crap, debian had black screen after install and solution didn't worked, so bye another linux...

    :)
     
    empleat, Sep 1, 2020
    #1
  2. trog100 Win User

    Move EFI partition

    its to enable win 10 to update to its anniversary edition.. it cant do this due to lack of C drive space i have had a quick try with the trial version of easus.. it didnt seem to be able to do what i want..

    i am assuming i cant just delete the efi partition but maybe i could.. as yet i havnt even figured out how to get into the bios of the thing.. maybe that should be my next step.. *Smile Deleting Debian bootloader from Windows 10 EFI partition :)

    diskpart could probably do it but figuring out how (it aint that user friendly) might be difficult without step by step instructions..

    trog
     
    trog100, Sep 1, 2020
    #2
  3. whatitdo6 Win User
    How To Fix The Windows 10 Bootloader

    THANK YOU. This solved it. I think this was mentioned earlier by you or someone else perhaps but I've messed around with it enough now where I vaguely understood what the commands were doing. I actually had to delete the partition, recreate it, and re write the BCD as you suggested in Step 3.

    Shoutout to @topgundcp I'm sure that last method you suggested would have worked too, but now I understand how to do it manually, so I learned something.

    Also, thank you @NavyLCDR for your help as well.

    I have ONE last question, any SAFE way to remove the old ubuntu EFI entries that are present in my UEFI as boot options?

    edit: Nvm, figured it out. For anyone else wanting to know how to remove old EFI boot entries, use "EasyUEFI" it is super easy. Took like 10 seconds after install. I DID have two identical looking EFI's for my samsung ssd, one of them, in the details, showed that it had no file path. I assumed that was my old broken one and deleted it, must have been correct bc my computer boots up perfect.

    Thanks!!!
     
    whatitdo6, Sep 1, 2020
    #3
  4. robo731 Win User

    Deleting Debian bootloader from Windows 10 EFI partition

    EFI partition deleted

    While installing a different OS. My EFI partition was wiped and set as unallocated space. I booted up a linux live cd and partitioned the unallocated space, formatting it back to FAT32. I was able to restore grub and boot into my linux distro. Now I want to restore windows' bootloader. I have a bootable usb with windows 10 on it.

    Can I just run Code:
    from the install media? Or are there other steps I need to take?

    Is there some GUI recovery type tool that will do it on the install media?
     
    robo731, Sep 1, 2020
    #4
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Deleting Debian bootloader from Windows 10 EFI partition

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