Was just upgrading a laptop from a hard drive to an ssd. I then proceed to check using CrystalDiskInfo whether the hard drive was still serviceable. However according to CrystalDiskInfo this particular hard drive has written over 75 petabytes. I don't know the entire history of this particular hard drive as the laptop was purchased second hand. However I have checked this drive on another computer with the same result. It's obviously some type of error as a consumer drive like this could not possibly last that long. The drive is a Western Digital Blue 320gb. Was just wondering if anyone has ever seen anything like this?