Disk Management is a built-in tool in Windows that helps users manage their computer's hard drives and storage devices. It allows you to create, delete, and resize partitions, which are sections of a hard drive that can hold data separately. This tool is useful for organizing your files and optimizing your storage space. Using Disk Management, you can also format drives, assign drive letters, and convert file systems. This means you can prepare a new hard drive for use or change how data is stored on an existing one. Overall, it’s a handy way to keep your computer’s storage organized and efficient.