Recently, we’ve received many message about how to install dual boot Windows 7 (or Windows 8.1) and Windows 10.

Please help me to set up a dual boot between Windows 8.1 and Windows 10 on an Asus Vivobook s200e. You used to be able to boot from a usb device using advanced startup in the settings app on windows 8.1 but that’s not there any more? When I try to boot from the usb using the EUFI for some reason when I select it as the boot device it just ignores it and boots straight into Windows 8.1 . This same USB stick works on other computers. I think my pc is using secure boot and fast boot.
dual boot Windows 10 and Windows 7
You can dual boot Windows 10 and Windows 7
In this tutorial, we will guide you to run dual previous Windows and Windows 10 build 10041 (other build: 9926, 10049, 10061, 10064 are same).
First, you have to Download and Prepare Windows 10 Preview .ISO file (build 10041)
Download: Windows 10 10041 English: x86 | x64

Determine your current running Windows is 32 bit or 64 bit: Right-click Start button -> System -> System type.
Download Rufus and use that to create a bootable copy:
Follow the instructions to create a dual boot configuration:
Things to consider before:
Backup your current installation of Windows. Because you will be making signifcant changes to your computer, you should always backup before doing so. It is strongly recommended! See links to resources about backing up by clicking the link for the respective version of Windows you are running: Windows XP, Windows Vista, Windows 7, Windows 8/8.1
Creating a Partition – Windows XP, Vista, Windows 7/8/8.1
Windows XP
If your system is capable, then you are good to go. Before we do that though, we need to set aside some disk space for Windows 10, because the partitioning tools in Windows XP are quite primitive, I personally use a third party solution called Easeus Partition Manager to setup the partition. It’s a free download and is very easy to use, in addition to being non-destructive.
So, the first thing you need to do is download Easeus at the following link
Proceed to install Ease us:
Click Next, follow the easy on screen instructions.
When the installation is complete, click Finish
Click Go to main screen
Select the drive you want to resize in the partition window
Drag the knob until you have a desired amount of disk space to install Windows 10, then release it. In the above screenshot I have allocated 19 GBs of disk space.
Click apply to apply the changes you just made.
Click Yes
Click Yes
Your computer will restart a few times and changes will be made to the partition layout, this process is hands free, so no interaction is required.
Partitioning Windows Vista and Windows 7/8/8.1/10
In Windows 7 and later versions of Windows, partitioning is easier to do than Windows XP. Regardless of this, you might encounter problems when using Windows 7’s disk management to create it. If you do experience this, refer to the previous instructions about using EaseUs to create the partition instead. Anyway, here is how you create a partition in Windows 7 or later:
Open a Run command (Press Windows key + R) on your keyboard. Then type diskmgmt.msc then hit Enter on your keyboard.
Alternatively, you can click Start, right click Computer > click Manage > click Disk Management.
Windows 8/8.1 and Windows 10 users:
Press Windows key + X on your keyboard and click Disk Management.
Once Disk Management is open, select the C: or where your current version of Windows is installed.
Right click it and click Shrink menu.
Wait while Windows checks for available disk space.
Enter the amount you want to allocate. Depending on the architecture of Windows 10 you want to try. If you are using Windows 10 32 bit, you can allocate 16 GBs or 20 GBs if you using the 64 bit version. Another factor is disk space for applications, page file, drivers, accumulation data over time. So make sure you make consideration for these factors. My personal recommendation is to go with a minimum 60 to 100 GBs of space for Windows 10 testing.
Click OK.
The Disk Management window should display unallocated disk space.
Preparing the .ISO file for installation.
See instructions for burning .ISO files in Windows 7 or later:
You can also use the Microsoft USB/DVD Tool, which is recommended for Windows XP users.
After obtaining the .iso file you use the Microsoft .iso to USB/DVD tool to create a bootable DVD or USB (requires a blank DVD or USB flash stick of at least 4 GB).
Starting the installation.
The following describes the standard way to start the installation, especially if you are dual booting a 64 bit version of Windows 10 alongside a 32 bit version of Windows. Another way is to start the installation from within a runing version Windows and select the partition where you would like to install Windows 10. See below for further instructions how to do so.
To learn how to change your BIOS options to boot from the DVD drive, see the following tutorial:
Once your computer is set to boot from the DVD, you should see this option.
If you are installing from a thumb drive, see the following instructions how to prepare your computer to boot from one:
The Windows logo will appear on screen, this might be here for a while, as long as you see the indicater, everything should be ok.
The setup screen will eventually appear, select your time and currency format then click Next.
Click Install Now
Wait while setup starts up
Accept the End User License agreement and click Next
Click Custom install Windows only (advanced)
Click Next and wait while the preview installs.
Starting the installation from within a running version Windows
Please note, this only works for Windows 7 and Windows 8/8.1.
If you run the normal setup routine from within a running version of Windows, Windows 10 setup does not give you an option to do a custom install. A quick work around for this is to launch the classic setup routine. After inserting your Windows 10 installation media, browse it:
Open the Sources folder
Then double click the Setup file. There are multiple files listed as setup, so make sure you double click just the one named setup.
This will start Windows 10 setup immediately. You can go through the normal screens until you reach the following:
Click Custom: Install Windows only (advanced) menu
Then select the partition or hard disk where Windows 10 will be installed, then click Next to start the installation.
When you have finally setup Windows 10 on your system, each time you start your computer, you will be given the option to choose which operating system you would like to Start.

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