My Pegasus J4 is making a long beep sound (30 seconds) occasionally when the drive wakes up. All the drive status lights are blue. I tried to install the Pegasus J4 Utility (V1.00.0000.15), but I guess it's too old for my OS; my iMac wouldn't open it. What can I do to figure out what there is such a long beeping sound?
My iMac is running 10.11.6 El Capitan