I tried to explain the results from DMDE.
DMDE (Disk Manager, version 3.4.4 free version), found 4 partition records:
1. NTFS Total space, as it is not partitioned at all 3TB, no filesystem here;
2. NTFS MS Data partition, wrong one, 2TB which is overlapping the 3rd partition found by DMDE, next in this list, no filesystem here;
3. NTFS [New Volume] Correct partition, this should be the first partition in real 2TB; All details including complete filesystem is correct in this partition;
4. NTFS [New Volume] Correct partition, this should be the second partition in real 1TB; All details including complete filesystem is correct in this partition as well.
So, in fact, I need those 3rd and 4th partitions recovered (total 3TB) and somehow I would need 1st and 2nd from this list removed, as I tried to explain.
First and second record are overlapping third and fourth record from the mentioned list.
The DMDE 3.4.4 found this, it allows many different activities in the free version, especially related to partition managing. I found DMDE being used together with Testdisk, by number of users.
Unfortunately, not clear how to remove partitions (in the right click menu on those partitions 1st and 2nd, I got grey, inactive "Remove partition" option).
As I cloned the 3TB HDD, I am now trying to get the 3rd and 4th partition from this list fully visible, not as 3rd and 4th, but as 1st and 2nd, with complete filesystem, to the Windows.
Assigning the drive letter to 3rd and 4th partition is possible, after that filesystem with all files / folders is fully visible as well on both partitions in DMDE and in, for example, Stellar Phoenix, but it is not visible from Windows.
Windows can see those partitions as not formatted.
Thanks for the reply, I hope I was able to clarify the issue.