Define what is meant by a system drive, and outline the step-by-step procedure for assigning or changing a drive letter using the Windows Disk Management utility.

### Why this is right The system drive is identified by what it contains and does: it holds Windows and files needed to start and run the computer. Disk Management changes the letter Windows uses to identify a volume, such as `D:`. The procedure selects the correct volume, chooses whether to add or change its letter, and confirms an available choice. ### The concept A **drive letter** is a label such as `C:` that Windows uses to make a storage volume easy to locate in File Explorer and in file paths. A **volume** is a usable area of storage, often a partition, which is a section of a physical drive. Disk Management is the built-in Windows utility for viewing and managing disks and volumes. To assign a letter, open Disk Management, right-click the intended volume, choose **Change Drive Letter and Paths**, then select **Add** if it has no letter or **Change** if it already has one. Choose an available letter and click **OK** to apply it. Changing a letter can disrupt shortcuts or programs that refer to the old path, so check before changing one. ### What a good answer covers - Defines the system drive by its role in storing Windows and essential startup files. - Explains that a drive letter identifies a volume in Windows. - Gives the Disk Management route to the drive-letter options. - Distinguishes **Add** from **Change**, then selects an available letter and confirms. ### Watch out Do not confuse the system drive with any volume that happens to have a drive letter. Changing the letter of a volume used by Windows or installed programs can cause problems, so do not change it casually. ### Terms - **System drive**: The drive or volume holding the operating system and files needed for startup and normal operation. - **Operating system**: The main software, such as Windows, that manages the computer and runs applications. - **Boot loader**: Software that starts the operating system when the computer powers on. - **Partition**: A defined section of a physical storage drive. - **Volume**: A storage area Windows can use and manage, often created from a partition. - **Disk Management**: A Windows utility for viewing and managing storage disks and volumes. - **Win + X**: A keyboard shortcut that opens a Windows menu containing system-management tools. - **`diskmgmt.msc`**: A Windows command that opens Disk Management. - **`.msc`**: A file extension used for Windows management-console files. - **OK**: A button label used to confirm and apply a selected setting. - **e.g.**: An abbreviation of “for example,” used to introduce an example. ### Remember A drive letter names a volume; the system drive is defined by the Windows and startup files it contains.