The hard drive does not show up in my computer but I am able to see it in disk management as Healthy (Primary Partition). How can I get it to show up again. I tried changing the drive letter but it is greyed out. The only thing I can do is Delete the volume or convert to dynamic disk. This is a 2 terrabyte drive with three partitions. All partitions are showing up as healthy. This is a external drive connected through a Thermaltake docking station.