Windows 10: Unable to boot Windows after installing Ubuntu [Fix]

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If you are a programmer or in any way or form related to IT, you would want to install Ubuntu on your computer. However, we have noticed that we are unable to boot Windows after installing Ubuntu as a dual-boot operating system. In this post, we will talk about this issue and see what you can do […]

This article Unable to boot Windows after installing Ubuntu [Fix] first appeared on TheWindowsClub.com.

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Unable to boot Windows after installing Ubuntu as dual boot

Hi Neeraj,



Thank you for writing to Microsoft Community Forums.



I understand that how difficult it can be when Windows does not boot properly.



Since you are unable to boot Windows after installing Ubuntu, I would suggest you to try rebuilding BCD file and see if that helps.

1. Create a bootable media and boot the PC
   using the media.
   
2. On the Install Windows screen, select
   Next > Repair your computer.
   
3. On the System Recovery Options screen, select
   Troubleshoot> Advanced options >
   Command Prompt.
   
4. Now type in the commands and hit enter:
   BOOTREC /FIXMBR
   
   BOOTREC /FIXBOOT
   
   BOOTREC /scanos
   
   BOOTREC /rebuildbcd
   
5. Restart the PC.
   

If the issue persists, please get back to us with the results of the troubleshooting steps to assist you further.



Regards,

Prakhar Khare

Microsoft Community – Moderator

 

dual boot xp and ubuntu

I had that problem a few months ago, but dual-booting is really easy. I am currently dual-booting Vista and Ubuntu 8.04 Hardy Heron. Use this website here for a guide to dual-booting XP and Ubuntu: APC issue 539 (December) is on sale now! (I actually did not use this guide at all, but I did pretty much the same thing!)

If you are unable to get your boot working with this guide, reply to this message, and I will write out a step-by-step guide, but it will involve you already having a partition set out for XP (as in you are not already using your entire hard drive space for XP alone.) Even though I write the guide with experience from Vista, it will work with XP

 

Help with dual booting Win 10 and Ubuntu

This is your whole problem. What you should have done is to put GRUB in sdb1 and Windows Manager in sda1 so that Windows Boot Manager is in control.
So what suggested above will not make any difference. GRUB is still in control of booting process.
To fix your problem. You will need to:

1. Move GRUB from sdb to sdb1
   |grub2 - how to move grub boot from one partition to another in linux - Ask Ubuntu
2. Rebuild The Windows Boot Manager ie. create a brand new BCD to boot Windows 10.
3. Once done with steps 1 and 2 above. Windows will not know UBUNTU exists and vice versa.
   Depend on the priority set in the BIOS, it will boot directly into that OS.
   However, you can boot either one from Boot Menu (Using whatever key that your Laptop assigned to: F2, F10....)
   Since I hate Dual Boot and seldom boot into Linux, I will stop here.
   Now, go to step 4 to create dual boot.
4. Use Easy BCD to create an entry for dual boot with UBUNTU. Once done, you should get a nice GUI dual Boot Menu
   and it will boot directly into either Windows or UBUNTU.

Here's the detailed explanation: How can I move windows 10 boot files to another drive to allow linux