By Lucas / Last Updated June 23, 2021

Can't Partition 4TB Seagate Hard Drive Problem

One of users named Abbey turns to me for help, he encountered a problem: he bought a 4TB Seagate hard drive, and planned to use it as the second data storage device. After installing it on his Windows 7 computer, intend to format and partition it in Disk Management. However, Windows 7 won’t let him to partition a 4TB hard drive, it’s so upset. How to partition Seagate 4TB hard drive in Windows 7?

Why Partition Seagate 4TB Hard Drive?

Generally speaking, Seagate external hard drives and internal hard drives are shipped with Master Boot Record (MBR) scheme by default which supports only 2TB hard drive space. If you want to use the whole 4TB Seagate hard drive in your computer, you have to convert the 4TB Seagate hard drive from Master Boot Record (MBR) to GUID Partition Table (GPT), and create partition on it. GUID Partition Table (GPT) is a newer standard for the layout of the partition table on a physical storage device used in desktop or laptop computer. It makes you can create a partition larger than 2TB in your hard drive.

So, if your 4TB hard drive is a MBR drive, you may stick in these situations: 4TB hard drive only shows 2TB; 4TB hard drive displays several partitions that’s not your expectation; can’t fully use the Seagate 4TB hard drive, and so on.

Eventually, the best way to solve these problems is convert MBR to GPT, and create a partition on it.

Free Seagate 4TB Partition Software

How to partition Seagate 4TB hard drive for fully use? You could use the Seagate 4TB partition software to achieve that goal. Compared with other partition tools, the best free Seagate 4TB partition software - AOMEI Partition Assistant Standard will allow you to convert MBR to GPT and partition the Seagate 4TB hard drive efficiently. It supports the current popular personal Windows operating system like Windows 7, 8, 8.1, 10.

Download Freeware Win 10/8.1/8/7/XP
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How to Partition Seagate 4TB Drive Easily?

In order to partition 4TB Seagate external/internal hard drive, first download the best software to partition Seagate 4TB HDD - AOMEI Partition Assistant Standard, which is a freeware you’re going to use. Follow the instructions to partition:

Convert Seagate 4TB hard drive from MBR to GPT

1. Install and run the program. Pitch on the Seagate 4TB hard drive, choose Convert to GPT Disk.

Convert 4tb To Gpt

2. Click OK to convert 4TB Seagate hard drive from MBR to GPT.

4tb Ok

3. Press Apply to confirm the operation.

4tb Apply

Create partition for Seagate hard drive

1. Right click Seagate 4TB hard drive, choose Create Partition.

Create New Partition With Unallocated Space

2. Edit the Partition Size, select Drive Letter and File System for Seagate 4TB hard drive. Then click OK.

Specify Partition Size

3. Press Apply on the tool bar if you affirm thePending Operations.

Click Apply

A few seconds later, you have partitioned Seagate hard drive successfully with free Seagate 4TB partition software.


Moreover, AOMEI Partition Assistant Standard also provides you extend partition, copy partition, recovery deleted partition, migrate OS to SSD, etc. Most important thing is you can try Partition Assistant Professional to allocate free space from one to another, convert primary partition to logical, convert dynamic disk to basic, and vice versa, and more features.