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How to Dual Boot Windows 7 and Windows 10

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    Microsoft has said users who are running Windows 7, Windows 8.1, and Windows Phone 8.1 can upgrade to Windows 10 for free within one year, which is really a piece of good news, but there are a small part of people who just want to dual boot Windows 7 or 8 with Windows 10 rather than upgrade. Considering this demand, in this post we will show users detailed steps to dual boot Windows 7 and Windows 10.

    Step 1: create a partition for Windows 10 in Windows 7 Disk Management.


    Right click “Computer” icon on the desktop, choose “Manage”, and select “Disk Management” from the left side to get the interface below:

    Dual boot Windows 7 and Windows 10 1

    Then, right click an existing partition which has a lot of unused space left and choose “Shrink Volume” feature from the popup menu. Since Windows 10 requires 16GB space for 32 bit and 20GB for 64 bit, here we take 51,200MB (50GB) space from the partition for Windows 10 to get the following window:

    Dual boot Windows 7 and Windows 10 2

    Now unallocated space reserved for Windows 10 has been created, and next we only need to install Windows 10 to this location.

    Tip: if you have more than 1 hard disk, it is highly suggested that you install Windows 10 on another disk.

    Step 2: install Windows 10


    Download Windows 10 image file and burn it to CD, DVD, or USB flash drive. Then, boot computer via Windows 10 installation disk. Next, install Windows 10 like installing other Windows operating systems.

    Tip: when you are dual booting Windows 8 and Windows 10 on laptop, you may fail to boot computer via the installation disc or even cannot install windows 10, which is due to the use of UEFI BIOS. For successful installation, you may need to do a serious of settings in BIOS. Please see Dual boot Windows 7 and Windows 8 to get solutions.

    After successful installation, you can either boot Windows 7 or start Windows 10, which just depends on your own demands.