Help Me, I'm Unable to Partition More Than 2TB on Windows Server

Hello everyone, Please forgive me for asking such a basic question, but it is critical for me. Windows Storage Server 2016 Standard was installed (dedicated disk). I want to make two 5TB partitions, but it won't let me make more than 2TB for one partition; do I have to use GPT with NTFS? Or does the operating system not support it? Please provide me with detailed instructions.

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Sherly· Answered on Jul 31, 2023

To boot from this volume, your Windows Server must support UEFI boot if your operating system is on it. MBR partitions are limited to 2TB. GPT partitions currently have a size limit that is much larger than the largest existing volumes. So you should convert MBR to GPT first to break the 2TB limit.

There are many tools/utilities that can help you with this conversion, such as Disk Management and Diskpart. Here, I use Diskpart to show you how to convert MBR to GPT. It's a free disk utility, but it may be a little difficult if you are not a user with much experience. So be careful when you follow the guide below:

Step 1: Launch CMD on your Windows Server.

Step 2: In CMD, type diskpart to launch the diskpart utility.

Step 3: Enter list disk and press enter to display a list of all your disks. Make a note of the disk number you want to convert from MBR to GPT here.

Step 4: Using the select disk x command, select your MBR disk. (Replace x with the disk number you want to convert from MBR to GPT.)

Step 5: Press the enter key after typing the clean command. (All existing volumes on your MBR disk will be deleted.)

Step 6: When you are finished, type convert gpt in the window. After this, type exit to finish this process.

As you can see, it's troublesome to use Diskpart, and this process will delete all your data on the MBR disk, so if you want to keep your data and simplify the process, turn to EaseUS Partition Master Server. This tool can help you convert MBR to GPT without data loss within three steps.

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