Question: I recently bought a WD Black 6TB Performance Internal Hard Drive:

https://www.amazon.com/gp/product/B0792GSD6N/ref=ppx_yo_dt_b_asin_title_o03_s00?ie=UTF8&th=1

And it keeps getting unallocated when I turn the external HDD hub on or off (although sometimes it doesn’t get unallocated), so it no longer shows up in windows explorer and is shown as unallocated in disk management. I am using a two slot Inateck external HDD hub:

https://www.amazon.com/gp/product/B00N1KXE9K/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&th=1

The Amazon details says it supports up to two 10TB drives, so I don’t think the hub is an issue. I have another 3TB HDD that is in the external HDD hub which always works whenever I turn the external HDD hub on or off.

Is the hard drive faulty or is there something else that is happening? Or am I not supposed to press the power button before shutting down my computer?

Answer:DMDE is very simple. It will find your missing partition in a matter of seconds. I wouldn’t bother with any other tool. I’ll walk you through it.

DMDE will also show us the content of sector 0. That will help us to determine if you are experiencing the same problem reported by others.