How to install dual operating systems or setup dual boot

What is Dual boot – A computer with two operating systems. At startup, a boot manager program lets the user choose which one to load. “Multiboot” may refer to a dual boot system or to hosting more than two operating systemsDual booting is more convenient, since you don’t have to delete Windows 10, while still maintaining a legacy version of Windows for compatibility purposes. This is guide is about How to install dual operating systems or setup dual boot.

RECOMMENDED: Fix this issue in 3 simple steps. Takes only 2 minutes.
1) Download repair utility.
2) Install program and click Scan button.
3) Click Fix Errors button when scan is completed.
4) Restart your computer.

Before we begin, I strongly recommend you backup your new computer with Windows 10 before carrying out these procedures.

How to install dual operating systems or setup dual boot

Here are the basic steps before we get to the details:

  • Install a new hard drive, or create a new partition on the existing one using the Windows Disk Management Utility
  • Plug in the USB stick  Windows 7 or other operating system bootable , then reboot the PC.
  • Install Windows on newly created partition or drive.
  • Select the newly created partition or the other hard disk as the destination for Windows 10. Then click Next to install the operating system. Learn how to perform install installation.

Important Drivers you should download and save in advance

When you perform a new install or upgrade, you should download the latest software drivers from the manufacturers website for your computer model. Important drivers include: Chipset, Video, Audio and Network (Ethernet/Wireless). For laptops, make sure you download the latest Touch Pad drivers. There are other drivers you will probably need, but you can often download these through Windows Update after have a working Internet connection setup.

How to install dual operating systems or setup dual boot

Find and download drivers from the manufacturers website:

HP Visit Manufacturer’s Driver Page
IBM Visit Manufacturer’s Driver Page
Dell Visit Manufacturer’s Driver Page
Acer Visit Manufacturer’s Driver Page
Lenovo Visit Manufacturer’s Driver Page
Toshiba Visit Manufacturer’s Driver Page
Fujitsu Visit Manufacturer’s Driver Page
NEC Visit Manufacturer’s Driver Page
Gateway/eMachines Visit Manufacturer’s Driver Page
Sony Visit Manufacturer’s Driver Page
Microsoft Visit Manufacturer’s Driver Page

Prepare the install media

Depending on the type of computer you have, an optical drive might not be available, which means, you will need to prepare a bootable copy using a USB thumb drive. This is ideal for newer 64 bit computers that come preinstalled with Windows 10. Rufus is the best solution to use: How to create install media for clean installation Create USB install media from Windows ISO.

If your computer is UEFI based, these are normally systems that come pre-loaded with Windows 8 or later, you will need to prepare the ISO file for such a configuration or you will receive an error message during setup. The thumbdrive needs to be formatted as FAT32 and use the GPT partitioning scheme. To do this, you need to use Rufus, a small tool you can download for free.

How to install dual operating systems or setup dual boot

After you have installed Rufus:

  • Launch it
  • Select ISO Image
  • Point to the Windows 10 ISO file
  • Check off Create a bootable disk using
  • Select GPT partitioning for EUFI firmware as the Partition scheme
  • Choose FAT32 NOT NTFS as the File system
  • Make sure your USB thumbdrive in the Device list box
  • Click Start
  • Close when complete

Prepare Partition where Windows 7 or Windows 8.1 will be installed

You will need to set aside some space where Windows 7 or Windows 8.1 will be installed. Considerations for the operating system, applications, software updates and personal files must be taken into account. If you plan to keep around the older version of Windows long term, then the bigger the better. I personally recommend a minimum 60 GBs.

Press Windows key + X then click Disk Management

How to install dual operating systems or setup dual boot

Select the system partition where Windows 10 is currently installed. Right click it then click Shrink.

How to install dual operating systems or setup dual boot

Enter the amount of space you would like to allocate to Windows 7 or Windows 8.1, then click Shrink. The more, the better.

An unallocated partition will now be available. Right click it then click New Simple Volume

How to install dual operating systems or setup dual boot

This will start the New Simple Volume wizard, which will let you format, assign a drive letter and label the volume.

How to install dual operating systems or setup dual boot

Once your partition is prepared, you are now ready to install Windows 7 or Windows 8.1. Insert or connect your install media. If setup does not start automatically, click Start > File Explorer > This PC. Double click the install media to begin setup.

How to install dual operating systems or setup dual boot

Click Yes when prompted.

How to install dual operating systems or setup dual boot

Click Install Now

How to install dual operating systems or setup dual boot

Click Custom (advanced)

How to install dual operating systems or setup dual boot

Select the partition we created earlier then click Next.

How to install dual operating systems or setup dual boot

Wait while Windows install files are copied.

After restarting, Windows will boot into setup.

How to install dual operating systems or setup dual boot

Windows setup will continue copying files then restart again.

How to install dual operating systems or setup dual boot

A boot entry will be added for the older version of Windows. You will notice an entry is also available for Windows 10. This will allow you to easily choose, which version of Windows you would like start when you turn on your computer.

Complete Out of Box Experience

You will need to complete the Out of Box Experience which includes creating an account/password, machine name, join an available wireless network, adjust time zone.

How to install dual operating systems or setup dual boot

After you have completed setup, proceed to install recommended drivers downloaded in advance:

Chipset, Video, Audio and Network (Ethernet/Wireless).

Also run Windows Update and also ensure you have an Antivirus utility installed and updated immediate.

How to install dual operating systems or setup dual boot

That’s it, when you ready to boot into your OS a choice, you can easily do so.

How to install dual operating systems or setup dual boot

Conclusion:
This guide is about How to install dual operating systems or setup dual boot. Now you have Windows 8 and Windows 7 both operating systems install on your computer. You can also setup dual boot with Windows 10 and Windows 7 by following slimier steps as above.Post your questions in comments or in Forum

Arun Prabhakar has written 159 articles

Arun Prabhakar immensely interested in following Windows and other technology developments. Being passionate Windows blogger, he loves to help others on fixing their computer issues.