How to remove a dual-boot Ubuntu system?

To remove Ubuntu dual system, you need to follow these steps:

1. Backup your data: Make sure to backup your important data to an external device or cloud storage before deleting Ubuntu.
2. Start the Windows operating system: Restart the computer and then choose to enter the Windows operating system.
3. Open the Disk Manager by pressing the Win + X keys and selecting the “Disk Manager” option.
4. Delete the Ubuntu partition: In the disk manager, locate the Ubuntu partition, right-click on it and choose the option to “delete volume”. Make sure to delete the Ubuntu partition and not the Windows partition.
5. Reallocate disk space (optional): If you want to allocate the space of the deleted Ubuntu partition back to the Windows partition, you can right-click on the Windows partition and choose the “Extend Volume” option. Follow the wizard’s instructions to proceed.
6. Update the boot configuration: Open Command Prompt with administrator privileges, then run the following commands: “bootrec /fixmbr” and “bootrec /fixboot”. This will repair the Windows boot configuration to ensure the system can boot up properly.
7. Restart computer: Restart computer to ensure the system starts as expected.

Please note that deleting the Ubuntu dual system will permanently remove all Ubuntu-related files and settings. Before proceeding with these steps, make sure to back up important data and understand the consequences of the actions you are taking.