How to Merge Disk Partitions in Windows 10

Feb. 8, 2021

While it’s helpful to have different partitions on your hard disk for different uses, you might sometimes need to merge them into a single contiguous unit. Whatever be your reason, you’re here because you’re looking to merge multiple partitions on your computer into a single unit, preferably without any data loss. So today, we will show you how to combine (merge) multiple hard disk partitions into a single unit inWindows 10computers using a built-in Windows tool called ‘Disk Management’, a third-party app called AOMEI Partition Assistant and via the command line tool ‘DiskPart’ (command prompt or cmd).

Merge Multiple Hard Disk Partitions in Windows 10

Windows 10 offers a built-in partition management utility calledDisk Managementthat can be used to merge or combine multiple partitions. However, you can also use third-party tools and even use the command prompt (cmd) to merge disk partitions in Windows 10. There are different pros and cons for each method, and here we will tell you exactly which method is suitable for what purpose. So without further delay, let’s see the various methods by which you can combine (merge) multiple partitions into a single contiguous unit and expand an existing partition in Windows 10.

You can easily partition your HDD orSSDusing a built-in Windows tool called Disk Management. It can perform basic tasks like delete, format and create new volumes, all of which are needed to handle the storage structure of a PC. However, there’s no actual ‘Merge’ functionality in Disk Management. Instead, one canincrease the size of a partition(volume) by adding unallocated adjacent space to the right. Another major drawback of the Disk Management tool is that you need to delete all data in the add-on space to be able to merge it with another partitions.

Alongside Disk Management, we will also use a third-party disk management tool to merge or combine two partitions. Most of these apps let you add non-adjacent unallocated space to create one large, contiguous volume without losing data. For the most part, they also have better user interfaces and are easier to operate for general users. There are manypartition management softwareavailable for Windows, including EaseUS Partition Master, MiniTool Partition Wizard, Paragon Partition Manager, AOMEI Partition Assistant and others. Pretty much all of them support the ‘Merge’ function. Finally, we’ll also learn how to use the command line tool, DiskPart, to merge partitions on a Windows computer.

That said, let’s check out how you can merge multiple partitions into into one in Windows 10:

This method will cause you to lose the data socreate a full backup of Windows 10before proceeding with this method.

Note:You can also also open Disk Management via Run > diskmgmt.msc.

Note:We’re using AOMEI Partition Assistant for this demo, but most of the other programs on our list, including the ones mentioned above, support the ‘merge’ function.

You can also use the command line (cmd) tool, DiskPart, to merge two partitions in Windows 10. Here’s how you do it:

That’s it. Your D: drive and E: drive are now one contiguous unit.

You now know how to merge or combine partitions on your Windows 10 computer using the built-in Disk Management tool, the command line (DiskPart), as well as using third-party apps like AOMEI Partition Assistant without losing data. Meanwhile, since you’re already interested in partition management, you should also check out how toconvert your hard disk partition style from MBR to GPT. You should also go through our detailed explainer on thedifference between BIOS and UEFIfor a more holistic understanding of how your computer works under-the-hood.

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