Windows 10: Unable to boot to OS while using Windows 10 ISO image. Booted to Ubuntu just fine.

My girlfriend has a Samsung 970 Evo M.2 SSD. I was trying to get this to be her primary drive for her Windows 10 OS, since her other drive boots very slowly.I had spent hours yesterday trying different things, and nothing seems to work to get it to boot on Windows 10. Every time I try, it ends up looping back into the BIOS.This has happened on 3 different chassis with completely different motherboards. A colleague at work recommended I try loading Ubuntu on it to see if it would boot with a different OS, and sure enough, it loaded and booted from the Samsung 970 Evo without issues.I am at my w

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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 538 (November) 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

 

Dual Boot

if you install ubuntu then you must choose. Wibi or using Grub.

Wibi is install Ubuntu inside windows

Grub is installing Ubuntu as a real seperate OS that will use the Grub Boot Loader and let you select which OS to boot when you start up your PC.