@Dan_Vidal, please note that this subforum is for the WD My Cloud and not the WDTV. They are two different devices. The problem with the WD My Cloud is some users, including myself and I would venture to guess the person who started this thread, are having trouble with certain USB drives not properly being mounted by the WD My Cloud Debain/Linux firmware. In my case the logs for the My Cloud shows that the firmware is seeing the drive, but for some reason the firmware treats it as read only, then fails to mount the drive. In my case this problem with certain external USB drives that I have started with the OS 3 firmware on the WD My Cloud.