How do I uninstall Kali Linux dual boot?

Start by booting into Windows. Press the Windows key, type “diskmgmt. msc“ into the Start menu search box, and then press Enter to launch the Disk Management app. In the Disk Management app, locate the Linux partitions, right-click them, and delete them.

How do I change dual boot to single boot?

Make sure first you set default OS to that OS which you want in System. Then remove Other OS. From this system will remove from Dual Boot. In a single boot system, there is only one operating system on your hard drive and when you boot into that OS, you will be using full resources for that single operating system.