Just received this disc I had need to immediately transfer any m musical library of more than 400Gb. That's 48 hours and I still have not managed to transfer anything correctemenent. Indeed the disk continues to disconnect and reconnect to the PC with the Windows sound that continues to remind me that hell continues. Checks and after multiple attempts, it appears that the USB cable connecting the PC to the DD is constantly disconnected from the same disc when fully immobilized on a flat table. I own 3 HDD Western Digital and the people are great, no problems, and the cable firmly into the socket of SD. On the Toshiba, the cable slides alone outside the dedicated socket on SD. This is a hair pulling ... I refer to Amazon and will invest more for the 10th WD!