The 38 MB small Partition already on that 2 TB unit is marked as a "GPT Protective Partition". This indicates that this drive originally was Partitioned using the GPT system and can't be accessed in a system that does not have a device driver installed for a drive of that type. You got this HDD out of an external drive by Seagate, so I presume it must have been set up that way while in that enclosure. In fact, I suspect it came that way, already Partitioned and "ready to use".
I presume that there is NOTHING on that unit that you need. That's because everything you do from here on will destroy any old stuff on it and leave it blank like a brand new drive. Is that OK?
Now, you say you "have tried wiping the drive". How? By formatting it? That won't do.
I am not sure, honestly, whether this first idea will work if you are using an OS without a GPT driver installed, which I suspect. But you could try. In Disk Management for Disk2, RIGHT-click on that small 38 MB Partition and Delete it if you can. If that works, you'll have ALL of the space Unallocated. Then you can right-click on that and choose to Make a New Simple Volume. I expect you won't have an option for this, but IF it asks about GPT or MBR, select to use an MBR type of Partition.
If you cannot do that Deletion to get all Unallocated Space, my other suggestion takes a lot longer. You need a free utility for this. You could get DBAN. Or, from the Seagate website, you can download their Seagate Disk Wizard for Windows, and run it under Windows as an application. Either way, what you need to do is Zero Fill that disk. BIG HEADS UP!!! This action wipes ALL the data from that one HDD unit. So at the beginning where you choose what HDD to operate on, make VERY VERY SURE you choose the 2 TB unit, and not another!!
A Zero Fill will fill absolutely every Sector with zeroes, and that will wipe out that old Partition so your HDD is like brand new. This takes hours to do, so be patient.
When it is finished you can exit out of the utility and get back to Disk Management. Now you should see that HDD as all Unallocated Space. As above, Right-click and Make a New Simple Volume using an MBR type of Partition.
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