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2 Ways to Make Use of Unallocated Space in Windows 10

Updated on Dec 11, 2018 by Daisy to Partition Master

Summary:
This article presents two ways to make full use of unallocated space in Windows 10 either by formatting the unallocated space Windows 10 to create a new partition in Windows 10 or by adding unallocated space to a partition.

There is a 99GB unallocated partition on Windows 10 computer:

"I have two hard disks installed on the Windows 10 desktop, so I would barely worry about the low disk space trouble. But there is a 99GB unallocated partition next to C drive, without any possibility to use it. What's your suggestion to make it usable?"

It's common to see unallocated space in Windows 10 computer, as our customers wrote to us. They feel puzzled about the blank space with no drive letter assigned to it. What is unallocated space on a hard drive? When setting up new Windows 10 computers, the system installation will ask you to partition unallocated space, which explains that without allocation, you can't use the space on the drive. In some cases, existing computers will also have unallocated space. 

A computer describes any physical space on a hard drive that doesn't belong to a partition as unallocated. This means that no programs can write to the space. For all practical purposes, the space doesn't exist to the operating system. To make use of unallocated space, you need to either create a new partition using the space or expand an existing partition.

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 Windows 10 is supported

Two Ways to Manage Unallocated Space in Windows 10

No matter which way you decide to make full use of the unallocated partition in Windows 10, the job can be easily taken by EaseUS free partition manager. It's the best Windows 10 partition manager that helps customize hard drive volumes as you wish.

Method 1: Create/make a partition Windows 10 on unallocated space

Notice:
If you want to create a partition on an empty USB, SD card or external hard drive, connect it to your PC in advance.
 

Step 1: Launch EaseUS Partition Master

On the main window, right-click on the unallocated space on your hard drive or external storage device and select "Create".

Create partition on unallocated space

Step 2: Adjust the new partition size, file system, label, etc.

Set the size, partition label, drive letter, file system, etc. for the new partition and click "OK" to continue.

Set up new partition

Step 3: Confirm to create a new partition

Click on the "Execute Operation" button and confirm to create a new partition by clicking "Apply".

Confirm and keep all changes

Method 2: Add unallocated space Windows 10 to an existing partition

This is an ideal way to fully utilize the free space in the unallocated partition, meanwhile, solve the low disk space trouble on the other partition. To add the unallocated space to an existing partition, you can either choose to merge partitions or resize the partition.

 

Step 1: Launch EaseUS Partition Master

Run partition manager software

Step 2: Extend partition

1. Right-click on the target partition and select "Resize/Move".

Resize target partition

2. Drag the target partition handle into the unallocated space to extend the partition.

Add space to the target partition

Step 3: Apply all changes

Click the "Execute Operation" button and click "Apply" to keep all changes.

Keep all changes for extending partition