There are several ways to remove an unnecessary operating system from your computer. Usually, it is enough to format the hard disk partition on which this OS is installed.
Instructions
Step 1
Turn on your computer and start an operating system that you do not plan to remove. Open the "My Computer" menu and find the local drive where the unnecessary OS is installed. Right-click on the icon for this section. Select "Format".
Step 2
In the menu that opens, specify the file system format and cluster size that will be assigned to the partition after the formatting process is complete. Click the "Start" button and confirm the start of the Disk Cleanup program.
Step 3
As you can imagine, this method will completely wipe the system partition of the hard drive. If you only need to delete the operating system files, then do it manually. Open the list of existing sections. Find the "Service" tab at the top of the working window and expand it. Select Folder Options. Open the "View" tab and check the box next to "Show hidden files, folders and drives." Click OK to save the new settings.
Step 4
Open the local drive where the unneeded copy of the operating system is located. Remove the following folders from this section: Program Files, programData, Temp, Windows, and Users. Delete all files located in the root directory of this section, except those you need. You will most likely have to confirm the deletion of certain files several times. This process can take a long time.
Step 5
If you want to save time, then just copy all important files to another partition of the hard drive and format the unnecessary volume.
Step 6
Now disable the loading of the remote operating system. Open the control panel and go to the "System and Security" menu. Now select the "Advanced System Settings" item located in the "System" menu. Click the Options button found in the Startup and Recovery menu. Uncheck the box next to Display a list of operating systems. Reboot your computer.
