Windows 10: Removing GRUB from a Windows and Ubuntu Dual-boot Setup

Hi! I am removing my Ubuntu from a dual-boot laptop PC and I am following this guide to do it:

https://itsfoss.com/uninstall-ubuntu-linux-windows-dual-boot/


However, I am skeptical of the sixth step, saying:


Step 6:

In the command line, type the following command to fix the Windows boot loader: bootrec /fixmbr


The reason why I am skeptical of it is because my PC hasUEFI not legacy BIOS, and MBR is a component of legacy BIOS if I remember it correctly.

My question is: would this still work?

:)

 

Uninstall Ubuntu Dual boot and Repairing Dual Boot in Windows 10

Hello.

I had dual-booted my Dell laptop which came with preinstalled Windows 10. I had dual booted with Ubuntu 16.04 by creating a partition on the disk. To remove this dual boot, i.e. I only wanted to keep Windows 10, I formatted the disk, drive F(in my case),
where Ubuntu was stored. But, now whenever I boot my system, a black grub screen comes with the following message:

"Minimal BASH-like line editing is supported. For the first word, TAB lists possible command completions. Anywhere else TAB lists possible device completions.

grub> _"

Upon writing 'exit', I am able to enter Windows.

1. I wish to know the reason behind it and how it can be removed.

2. I found this site, Uninstall Ubuntu Dual boot, I went ahead and performed all the steps. But somehow
ended up with this error.

Also, I saw your reply on this thread Repairing Dual Boot in Windows 10.
But it did not help me to remove my error. I will really appreciate your help in removing this error.

Thank you.

 

Issues upgrading Windows 8.1 to 10 on a dual boot laptop with Ubuntu

Hello George,

Sorry for the delay in response.

Yes, dual boot of Ubuntu and Windows is very sensitive in order of things.

Windows OS should be installed first, because its boot loader is very particular and the installer tends to overwrite the entire hard drive.

GRUB is the boot manager installed in Ubuntu by default. GRUB is an open source boot manager that install the main parts of the boot loaders inside Ubuntu. This means Ubuntu is independent and avoids any need for writing to other
operating systems

So the best way to resolve this issue as rightly suggested in the initial post i.e.:
remove the partition with Ubuntu and make Windows a primary, reinstall Ubuntu and Grub.

We regret the inconvenience caused on the applications that you will have to reload. Suggest you to back up of any important data present in Ubuntu before reinstalling it.


Get back to us if you require more clarity on the issue.

 

Well, another set of Windows 10 patches installed, another trashing of my GRUB dual boot System: UBUNTU GRUB FIX

Well, another set of Windows 10 patches installed, another trashing of my GRUB dual boot system, another evening spent repairing it. When is Microsoft going to stop their upgrades destroying dual boot systems?

I know Microsoft don't want anything on my PC except Windows, however you can't always get what you want! If you make me choose between Windows and UBUNTU, you lose!

ADVICE for anyone using Ubuntu in a dual boot system with Win10 on a x64 architecture as a WIN10 patch upgrade WILL wipe your GRUB boot system out.

1) have a UBUNTU boot disk handy. Always!

2) When a Windows upgrade destroys GRUB, use the UBUNTU boot disk and boot up into "Trial" mode (i.e. don't reinstall UBUNTU). You may need to re-order your boot sequence and also ensure that secure boot is DISABLED else this may not work. Booting from dvd
takes time - be patient!

3) Ensure you are connected to the internet - you may need hard wired connection as wireless does not always come up in Trial mode

4) Open a terminal and download the GRUB repair program:

"sudo add-apt-repository ppa:yannubuntu/boot-repair" <CR>

"sudo apt-get update" <CR>

"sudo apt-get install -y boot-repair && boot-repair" <CR>

MB sudo doesn't need a password when you boot into "Trial" mode.

5) When the boot repair program comes up, find your way to the advanced tab aand select "grub installation / repair" option, and follow any instructions given

6) Remove UBUNTU boot disk and reboot to Windows, open a admin enabled terminal (not powershell) and enter:



"bcdedit /set {bootmgr} path \EFI\ubuntu\grubx64.efi" <CR>



you should get a "success" message

7) reboot, and the grub menu should appear. Enjoy!

This works on Ubuntu 14 and Ubuntu 16 LTS coupled with Win10.

regards

Alan