How to create a Dual-Boot Windows 10 installation USB drive

How to create a Dual-Boot Windows 10 installation USB drive

Do you dual-boot between the Stable and Insider builds of Windows 10? Would you like a flash drive that could boot and install both versions of Windows 10? Well, this tutorial will show you how to make that happen. All you have to do is follow the steps below. I'm sorry if you're already really familiar with some of the steps, I just want this tutorial to be useable (and understandable) by as many users as possible. Let's get started, shall we?

1. Choose a flash drive (preferably blank, and at least 16 GB in capacity).
2. If it's blank already, please go to step 6.
3. If it's not blank, please go to step 4.
4. Backup any important files on your flash drive.
5. After backing up your files, quick format the flash drive.
6. Download Easy2Boot from http://www.easy2boot.com/download/ .
7. Unzip the download to a folder in your Downloads forlder or on you Desktop (recommended folder naming: E2B or Easy2Boot).
8. Go to the folder and run the "Make_E2B_USB_Drive_(run_as_admin).cmd" file.
9. Now go and download the Windows 10 ISO files you need.
10. For the stable (consumer or RTM version) of Windows, you'll need to grab a copy of the Windows Media Creation Tool from http://go.microsoft.com/fwlink/?LinkId=691209 .
11. After the tool is downloaded, run it. You'll see a UAC prompt, requesting administrative privelieges.
12. Select the "Create installation media for another PC" option.
13. Select the appropriate options under Language, Edition, and Architecture.
14. Select the option to download to an ISO file.
15. You will be prompted to save it. Feel free to save it wherever is most convenient (although I would recommended placing on the Desktop, where it's easy to find).
16. You'll see a download progress statement.
17. After downloading the files, the tool will prepare your ISO file.
18. After preparations finish, click Finish (since we won't be burning the file to a DVD).
19. For the Insider Preview build, go to insider.windows.com .
20. You'll be prompted to log in with your Microsoft account.
21. If it's already registered, you can skip the next step.
22. Join the program, if you aren't already a member.
23. After logging in, scroll down to "The Best Windows yet is here".
24. Underneath the "Get Windows 10" button, there is a link to go directly to the latest build. Go there.
     25. As of right now, both the Insider and Consumer builds are the same, so you will receive the same page as you went to in step 10, from the Insider link. I will update this tutorial once new Insider ISOs are available.
25. Once the files are downloaded, make copies and then drag-and-drop the copies to the _ISO\WINDOWS\WIN10 folder.
26. Once the files are copied and you're sure they're in the appropriate location, go to the root directory of the flash drive and run the "MAKE_THIS_DRIVE_CONTIGUOUS.cmd" file, to make the drive bootable.
    This tutorial is not Windows-only; it can be used with Linux and DOS ISOs as well, so this could be used to create a Swiss Army knife disc, that boots from Windows 10/8.x/7/Vista/XP, Ubuntu/Fedora/Linux Mint/openSUSE/Mandriva/any Linux distro, as well as tool-based/recovery distributions, so your flash drive could become the ultimate Windows repair disk with this tutorial.