ROCK music storage

Have ROCK installed on Intel NUC.
Have a USB drive with music plugged into NUC.

How to I add music from the external drive?

The drive is formatted exFAT but does not show up in chose music storage folder?

Any ideas ?

Connected a diferent hard drive and it showed up.Must be a issue with the first drive

try formatting the HD as exFat from scratch, it usually solve lots of problems