Description: The ‘VBoxManage unregistervm’ command is a command-line tool used in virtualization software, allowing users to remove a virtual machine (VM) from the virtualization registry without deleting its virtual disk files. This is particularly useful when wanting to free up space in the user interface or when needing to reorganize virtual machines without losing associated data. By unregistering a VM, its entry is removed from the management interface, but the physical files, such as virtual hard disks, remain intact in the file system. This command is part of a broader set of tools that allow users to efficiently manage their virtual machines from the command line, making it ideal for system administrators and advanced users who prefer to work without the graphical interface. The command’s syntax is straightforward, and its use can be combined with other management commands to perform more complex tasks, such as creating, modifying, or deleting virtual machines. In summary, ‘VBoxManage unregistervm’ is an essential function for managing virtual machines in environments where flexibility and complete control over VM configuration and state are required.