Hard Drive Shows 2TB of 20TB in Windows Server, What Should I Do

It showed 20TB of storage during installation, but Windows 2016 now shows 2 TB. What is my solution at this point? What should I do to stop this from happening again if I need to wipe and reinstall it? 

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Cici· Answered on Dec 20, 2023

It may be due to the partition style if you can't see the remaining partitions in Windows Server beyond 2TB. Your partition style is set to MBR. You need to understand the difference between MBR vs. GPT first.

  • MBR only supports 2TB drives, while GPT can support drives larger than 2 TB.
  • In addition, you need to note that MBR boots from the BIOS, while GPT boots from the EFI. 

Once you understand the considerations and differences, you can view all your hard drive partitions by converting MBR to GPT. To avoid data loss, I recommend you use EaseUS Partition Master Server. This is a safe and secure third-party tool.

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It is the easiest conversion tool and is compatible with all Windows systems.

Note: The first step to convert MBR to GPT without losing data is to back up your data. Backing up in advance will relieve you of worrying about what could go wrong.

Then you can follow the steps to display a 20TB hard drive.

Step 1. Launch EaseUS Partition Master and select "Disk Converter" on the left side.

Step 2. Select "Convert MBR to GPT" and click Next.

Step 3. Select the MBR disk and start the conversion.

If you would like a step-by-step guide with pictures or to learn other ways to display 20TB of space, please refer to the links below.

Further Reading: How to Convert MBR to GPT without Losing Data Windows Server

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