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Dual boot Windows 8.1 with Windows 10 Tecnical Preview

Miguel by Miguel
November 15, 2014 - Updated on July 22, 2019
in Windows
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RECOMMENDED: Transfer Windows and Installed Data to Another Hard Drive

In this tutorial I’ll Dual boot Windows 8.1 with Windows 10, but first I need to partition Windows 8.1 C: drive to make room for Windows 10 there. There are few recommendations before continuing make sure to back up cause you never know what might happen.

Before you begin make sure to complete the first 4 items:

  • Disable UEFI.
  • Download Windows 10 Technical Preview.
  • Burn the Windows 10 ISO Image to a Disc.
  • Change First Boot Device in BIOS to Boot From CD/DVD.

To get started, log on to Windows 8.1 Right click ‘This PC’ and select ‘Manage’.

Dualboot windows 8 4

Next, select ‘Disk Management’ Make sure that your hard drive does not contain 4 partitions or more. If you do have 4 or more partitions do not continue for this tutorial might not work.

Dualboot windows 8 1

Right click C: drive and select Shrink Volume from the drop down menu.

Dualboot windows 8

Select the size in Megs you wish to reserve for the Windows 10 installation. (create more than 25 Gigs) and Shrink.

dualboot win 8.1 and win 10 3

Restart Windows 8.1 with the Windows 10 installation disc in the disc drive.

Starting is going to ask you to “Press any key to boot from the CD or DVD” press Enter key on your keyboard.

Dual Boot Windows and Fedora 2

Select the Language Time and Keyboard method from the drop-down and click on Next.

install Windows 10 Technical Preview 12

Then click on Install now.

install Windows 10 Technical Preview 13

Check mark I accept the license terms and click on Next.

install Windows 10 Technical Preview 14

Select Custom: Install  Windows only (advanced) from the installation type window.

install Windows 10 Technical Preview 1

Select the Unallocated drive available and click on next. This is the partition you created earlier while in Windows 8.1.

Dualboot Windows 8.1 with Windows 10 12

This process will install all necessary files to the drive. This may take a while depending on your computer speed.

install Windows 10 Technical Preview 3

Here continue with Windows 10 Technical Preview.

Dualboot Windows 8.1 with Windows 10 13

While in the installation of Windows 10 it will re-start several times, don’t press any keys if it ask you too.

install Windows 10 Technical Preview 4

Here select Use express settings.

install Windows 10 Technical Preview 5

Log in using your Microsoft email account or Unplug the Internet cable from your PC to create a local account.

Once the local account has been created you are ready to use Windows ten.

install Windows 10 Technical Preview 7

If you Unpluged the Internet cable from your PC to create a local account then don’t forget to plug it back in to have access to the internet.

install Windows 10 Technical Preview 8

Video Tutorial:

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Miguel

Miguel

I started this tech blog back in 2011 as a place to write down processes I took to fix my client systems and network. Now I write some tips and tricks to help others with the tech issues that one might encounter.

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