How to Install Two Operating Systems on a Desktop Computer or Laptop 💻💽🤔
Channel: Hetman Software: Data Recovery for Windows
Date: 2017-05-25

👍 Watch how to install two working operating systems on one computer - I mean having Windows 7 as the main system and Windows 10 as an additional system.
If necessary, you can use the method I will describe to install another copy of Windows 7 on your computer. 

Windows System Files: Where They Are Stored, How to Display or Restore Them: https://hetmanrecovery.com/recovery_news/what-does-windows-system-file-mean.htm

Сontent:
0:00 - Intro;
0:57 - Installing Windows 10 on a hard drive
4:26 - How to set the first system (Windows 7) as default?
5:46 - How do I uninstall the system?
6:52 - How do I delete files from the old system?

You may need to install another operating system on a modern computer if the current operating system can’t help you in a certain situation. At the same time, it is important to have the first, main version of Windows. 

The disadvantage of having two Windows on one computer is in possible errors during the installation: damaged boot record, failure of both systems due to wrong actions and, as a result, loss of important data.

How to enter BIOS or UEFI and boot your PC from a USB drive  - 
https://youtu.be/BOWhvngUWZE

How to create a bootable USB drive to install Windows 10, 8 or 7 - 
https://youtu.be/YUOLPBSgwI4

How to make a clean installation of Windows and learn about possible installation problems and ways to fix them - 
https://youtu.be/lb7P2iATJwc

If you lost some files as a result of installing, uninstalling, updating or resetting Windows, you can bring them back with Hetman Partition Recovery - 
https://hetmanrecovery.com/hetman_partition_recovery_download.htm

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