Press Win + R, type cmd, and press Ctrl + Shift + Enter to open Command Prompt as administrator. Type the following command: ...

Here's a simple registry hack you can use to delete the inbuilt Administrator Account in Windows 11/10. It's not something we recommend, but the option exists.

Fix Virtual Disk Service error Delete is not allowed on the current boot, system, pagefile, crashdump or hibernation volume on Windows 11/10.