You may not have permissions to initialize ("mount") the device. On UNIX systems, often system administrator privileges are required to initialize a device.
Efallai nad oes ganddoch caniatadau i ymgychwyn ("mount") y dyfais. Ar gysodau Unix, y rhan fwyaf o' r amser mae angen hawliau gwasanaethydd cysawd i ymgychwyn dyfais.