# Set-Volume > Sets or changes the file system label of an existing volume. > Note: This command can only be used through PowerShell. > More information: . - Change the file system label of a volume identified by drive letter: `Set-Volume -DriveLetter "D" -NewFileSystemLabel "DataVolume"` - Change the file system label of a volume identified by the system label: `Set-Volume -FileSystemLabel "OldLabel" -NewFileSystemLabel "NewLabel"` - Modify the properties of a volume using a volume object: `Set-Volume -InputObject $(Get-Volume -DriveLetter "E") -NewFileSystemLabel "Backup"` - Specify the Data Deduplication mode for the volume: `Set-Volume -DriveLetter "D" -DedupMode Backup`