#Trouble #StorageMedia #HW-Hardware/Mac > [!Bug] > > If an external storage drive dismounts unexpectedly due to I/O errors or corrupted data, the CalDigit Element Hub may subsequently disallow a connection to the problematic device. > > This bug is prevalent with LaCie d2 Professional HDDs, wherein the Blue status light will fail to illuminate upon re-connection. > > > [!Success] Partial Joy > > Disconnecting and reconnecting the CalDigit Element Hub from the Mac's Thunderbolt port or cable will reboot the accessory, and allow the HDD to reconnect when subsequently re-patched to the CalDigit Element Hub. > > > [!Failure] No Joy > > Merely re-patching the HDD to the CalDigit Element Hub is not likely to be sufficient to fix the problem. > > > > However, the HDD mechanism may spin up and 'twitch' within the enclosure, misleading the user to assume the drive will connect. >