To start, let's connect to your RoonOS Web Interface. Next, confirm that your drive is shown. If an HDD or SSD is attached to the ROCK's internal SATA connector, you will see the "Internal Music Storage" section in the Web Administration Interface.

If this is missing, it means the drive has not been detected by ROCK. Next, let's format the drive by clicking the "Format" button next to your drive. Roon will not be usable during this time, and it may take up to 10 minutes to format depending on the performance and size of your drive. After the format is complete, the "Internal Music Storage" section in the Web Administration Interface will change to show that it is formatted.

You can now add files to the drive: