Windows 10: Windows 11 unable to allocate 2tb in a 4tb hard drive

Hi!Somewhat recently i aquired a 4tb HDD and allocated half of it just fine but noticed that the other half wasn't included in the volume and when i tried to allocate it all the options were grey. I don't know what to do so please if any of you have had the issue before and fixed it, tell me how you did!

:)

 

4tb Hard drives showing as 2tb

Microsoft Windows 10 Pro 64-bit (2009, 19042.985)

Version: 10.0.19042



I have 2 Seagate Barracuda drives that only show as 2tb.
They are gpt.
This is since using them in raid in nas.
tried everything in this thread
Disk Management shows new 4TB disk as 2TB despite using GPT
Drives are F & G in screenshot,i have 2 other 4tb drives that are fine.

 

Use of drives wrongly allocated.

Hi,



I realize the inconvenience you are experiencing with Windows 10. I will certainly help you.



This issue might occur if Windows 10 is not installed properly.



I suggest you to follow the steps below to



To assist you better, please provide us the information below:

• When you say that "Windows 10 I discover that the 2TB hard drive that I used for photographs only has been allocated for use as the primary root drive C", are you referring that 2TB drive is where Windows 10 is installed? Which drive have you exactly clean
  install Windows 10?
• What is the drive name where Windows 10 is previously installed?

Please get back to us with an update on Windows 10, we will be happy to help.



Thank you.

 

New 4TB Hard Drive Read As 1.6TB

The 4TB drive only shows 1.6TB, there always are two reasons for that:

1.The 4TB hard drive has been initialized to a wrong partition table. If you find a formatted hard drive not showing full capacity, which is mainly because you format the
4TB hard drive to MBR partition table. As we all know, MBR partition table cannot address to the space that exceeds 2TB. As a result, to use a full capacity of a hard drive that is larger than 2TB, you need to initialize it to GPT partition table
via
an MBR to GPT converter.

2.The 4TB external hard drive does not connect correctly. Some portable hard drive and USB hard drive are designed to connect a PC via a USB port. If you install the USB hard drive to your computer, the hard drive capacity detecting may
become an issue. An accepted explanation is the controller board of USB hard drive breaks the 2TB limitation, yet Windows internal device controller does not. Therefore, you need to additional hardware to make the installed USB/portable hard drive showing
full capacity. In that case, all you need to do is connecting the 4TB USB hard drive via USB port.