Help! New 8TB hard disk not being initialized.

Hey guys,
I made my PC a year ago and it runs great. I had purchased a 4TB Toshiba X300 internal HDD for it and it works flawlessly. Recently I decided to add a new HDD in addition and went for 3.5'' Toshiba X300 8TB. But the problem is that my PC is not picking it up. It is being shown as "Unknown Not Initialized" in disk manager and doesn't event show the capacity. Furthermore, if I try to initialize it, it shows "A device which doesnot exist was specified" error. In my BIOS sometimes it would show up as detected but as a 4TB one. I updated my BIOS, all the drivers and then it started to show up as 8TB but that doesn't solve the issue still. I checked all my cables, used new ones, tried installing windows on it(can't because it doesn't show up), heck even Ubuntu because I thought maybe it was a Windows issue. I can not use any software since it doesn't event show up anywhere. This is the 2nd time it is happening(I bought one(same) and returned one already because it was giving me the same error). I have tried everything to my knowledge and still don't know what the issue is. I think its my Motherboard that doesnt support more than 4TB but that doesn't make any sense. Bios is running in UEFI mode and yes I am trying to use GPT.Any help would be appreciated.
My PC specs: https://pcpartpicker.com/list/BJ69Rk
Thanks alot!

gus said:

This from the other site you are getting advice from.


" Can you just use that one drive plugged in, and see if BIOS can read it? The 8TB.

Don't think you ever mentioned that.

If BIOS doesn't detect it, I fear it is a DOA.

If Windows can't read it, can you try a Linux boot-cd or usb stick? Like Ubuntu or Mint? Not install it, just see if the live instance can see it. Boot into it. You will loose nothing."

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Thanks for the reply. I have tried plugging ONLY the new drive, it shows up in BIOS like I said but not in Windows and not in Ubuntu.

Rustys said:

If I may jump in and ask.

When you look in Windows and even in Linux for the Drive where are you looking?

In Linux look for a program called Disk and see if it is listed there?

In Windows (8 and above) press the windows key and x to bring up the quick menu
From here select Disk Management and does the drive show there.

Give each one a bit to read the system and drive.

Post a complete screen shot of them if you have any questions

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Nothing shows up in both. Sorry for the late reply.

phillpower2 said:

Any update for us?

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I decided to return the hdd. This is the 2nd hdd I have returned(is this luck that both were faulty?I doubt it). I dont know what to do tbh. Should I order a 4TB one, the same I already have or go for the 8Tb again.