broken boot record after uninstalling ubuntu (hurry)

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  1. Posts : 439
    Windows 10 Pro 64 bit 20H2
       #1

    broken boot record after uninstalling ubuntu (hurry)


    I have windows 10 1909 , ubuntu 19.04 dual boot. Bugged linux, i got black screen after an update, so i decided restart my computer after more than half and hour - because it cant take so long updating from previous version. Beside shouldnt get blackscreen... I was unable save ubuntu system, so i was forced to reinstall and i wanted to change distro, because i had only bad experience with it so far...

    So i find this thread here on this forum, i tried easy UEFI to delete ubuntu boot record, but it didnt work.
    Than i tried:
    mountvol U: /s
    dir /A /S U:\

    del /F U:\ path\loader.efi
    RD /S /Q "U:\EFI\ubuntu"
    mountvol U:\ /D

    Next i restart my pc and after post screen grub command line shows and pc not booting.

    So i google how to fix bootrecord after uninstalling ubuntu on gpt disk... So i finally get to part when i write bootrec /fixboot and it said access denied so i find another website and than it worked. This is supposed to fix it. But again, windows not booting, instead it says please insert bootable media bla bla bla... At this point i am really annoyed, so i find on other site http://Fix UEFI Boot: Repair UEFI Bo...0/8/7 EaseUS another guide, which is same, but at the end is fix BCD store. Did that and now when i start pc it instantly resets and cant get even to the bios LUL

    That should be everything i did, i read whole article before i tried anything and title says it fix boot record after uninstalling ubuntu on gpt disk, yet it didnt work. These guides are full of sh1t and never work. I have backup, but with grub on disk, so if i break something i can revert that. Unfortunately linux distro was on another disk so that is gone, now it won't boot. So i need to repair windows boot loader.

    Please halp !!! This crap is so annoying, did everything right step by step and it doesn't work...
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  2. Posts : 52
    Windows 10 64 bit
       #2

    I hate to say this but I had Linux on a computer and then decided I didn't want it on that computer, I booted to windows 10 deleted the partion with Linux on it, and my computer wouldn't boot windows 10 so I had to do a clean reinstall of windows and that will definitely fix that. for info on how to reinstall click here
      My Computers


  3. Posts : 439
    Windows 10 Pro 64 bit 20H2
    Thread Starter
       #3

    GoldenDog said:
    I hate to say this but I had Linux on a computer and then decided I didn't want it on that computer, I booted to windows 10 deleted the partion with Linux on it, and my computer wouldn't boot windows 10 so I had to do a clean reinstall of windows and that will definitely fix that. for info on how to reinstall click here
    HAHAHAH i am not doing that, i can't reinstall anymore.. I backup, but didn't count, that my linux will break and will have to delete partition on it, so even backup wouldn't help without fixing boot loader. It must work, it is not rocket science. But it is really hard to find solution and i am not expert. I tried even simple solutions with massive upvotes and even that didn't work sometimes for some reason.

    I just hope some expert here knows how to fix this...
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  4. NavyLCDR's Avatar
    Posts : 15,514
    Windows 10 Pro
       #4

    Create a small, 100mb, FAT32 EFI System Partition and write the boot files to it using the bcdboot command. In order to help more, though, you need to provide us with a screenshot showing the partition layout of the drive the Windows partition is on.
      My Computer


  5. Posts : 439
    Windows 10 Pro 64 bit 20H2
    Thread Starter
       #5

    NavyLCDR said:
    Create a small, 100mb, FAT32 EFI System Partition and write the boot files to it using the bcdboot command. In order to help more, though, you need to provide us with a screenshot showing the partition layout of the drive the Windows partition is on.
    I am on it, thanks !

    EDIT: i am downloading kyhis recorvery tool to do it atm, should i delete existing 100 mb partition, or leave it ?
      My Computer

  6. NavyLCDR's Avatar
    Posts : 15,514
    Windows 10 Pro
       #6

    empleat said:
    I am on it, thanks !

    EDIT: i am downloading kyhis recorvery tool to do it atm, should i delete existing 100 mb partition, or leave it ?
    You can delete it. You should be able to post a screenshot of disk management from Kyhi's tools.
      My Computer


  7. Posts : 439
    Windows 10 Pro 64 bit 20H2
    Thread Starter
       #7

    NavyLCDR said:
    You can delete it. You should be able to post a screenshot of disk management from Kyhi's tools.
    Is this okay i used phone and sent email myself, sorry for the quality, my hand shaked. I was already doing that before i got kyhis.. broken boot record after uninstalling ubuntu (hurry)-system-disk-efi-partition.png

    These which are crossed out are other disks partition. C is ssd gpt disk for order.

    So how do i delete existing partition and create new one and create there bootrecord ? I can't see anywhere disk manager. I am now* booted on kyhis recorvery driver. i will try to figure that out meanwhile...

    EDIT: i see only disk explorer is that it ? I don't know how to use it, i can't find manual.

    Disk explorer is not it and google finds nothing, there is no disk manager. Ah i think i found it: minitool partition wizard. Still no idea how to create new efi disk and how to proceed after that...

    Existing efi deleted... Now i am trying to recreate efi partition using diskpart, my tab when i had it open closed great
    Last edited by empleat; 01 Feb 2020 at 15:20.
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  8. Ztruker's Avatar
    Posts : 13,511
    Windows 10 Pro X64 20H4 19042.746
       #8

    Slow down. Wait for NavyLCDR to answer you. Don't go off doing things that can make matters worse. Have a little patience.
      My Computers

  9. Ztruker's Avatar
    Posts : 13,511
    Windows 10 Pro X64 20H4 19042.746
       #9

    Disk Management you get to by pressing Window key+R, typing diskmgmt.msc and pressing Enter.
    Minitool you've already found.

    For either, make full screen, expand the fields so all data can be seen, then capture the screen.
    I think paint is available on the Kyhi rescue ISO, so press Window key+R, type mspaint.
    Ctrl+V to past the captured screen into paint, then save it to the USB flash drive.
    Go to the computer you are normally posting here from and add that image to a post.
      My Computers


  10. Posts : 439
    Windows 10 Pro 64 bit 20H2
    Thread Starter
       #10

    Ye i am bored to dead right now, and i was just doing what he said, but you are right.

    I have deleted and recreated partition, which was efi to normal fat32 partition, which had 100MB and now it has 98MB only. Command: "create partition efi size=100" failed with error message: "no usable free extent could be found. It may be there is insufficient space"... Damn you minitool wizard 9, i selected all available space, how it comes ?

    I really need to fix this right now, otherwise i go crazy

    I crossed other disks, don't worry i didn't cross anything related to system disk. And these rectangles where are disk partitions cannot be expanded, but it is clear what there is written,
    Attached Thumbnails Attached Thumbnails broken boot record after uninstalling ubuntu (hurry)-system-disk.png  
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