How to delete a dual system

The method is as follows:

1. Enter the system you want to retain (win7 is used as an example)

2. Press the shortcut key win + R (or enter msconfig in the Start Menu. The following page is displayed. Click guide.

Delete the selected system.

Restart the system and you will find that the other boot system does not exist. After entering the system, format the disk of the deleted system. The rest. If you are willing to merge disks, You can merge them. If you are not willing to merge disks, you can keep them.