Resize Partition Windows 10: Use 3 Tools to Shrink/Extend Volume in Windows 10

Brithny updated on Sep 24, 2020 to Partition Master | How-to Articles

This page introduces how to resize partition Windows 10 (32bit and 64bit) without losing any data. Follow to learn how to shrink volume as well as how to extend partition with unallocated space in Windows 10 on your own. 

Method 1. Resize Windows 10 Partition with EaseUS Partition Master
Method 2. Resize Partition in Windows 10 Using Disk Management
Method 3. Shrink/Extend Volume in Windows 10 with Diskpart

How Do I Resize Partition in Windows 10

How to resize partition size in Windows 10

Question 1 - "How can I change partition size in Windows?"

Question 2 - "How can I increase partition size without formatting in Windows 10?"

Question 3 - "How do I increase or shrink space in Windows 10?"

Resizing partition is a process to re-allocate the disk space in Windows PC so as to extend or shrink partitions, making full use of unallocated spaces on a hard drive or SSD. For example, when the C drive is out of space, you need to resize another partition and add free space into C drive so as to fix this issue.

So how to resize partitions in Windows 10/8/7? In the next, we'll take Windows 10 as an example to show you how to manage partition size, including shrink volume and extend partition in Windows 10/8/7. 

3 Best Tools to Resize Partition in Windows 10

Here in this part, we'll introduce two user-friendly and powerful partition management tools and one administrators' favoriate tool to help you freely adjust the size of a drive partition.

Here are the 3 best tools that work to resize Windows 10 partitions for free:

  1. #1. EaseUS Partition Master - Easiest
  2. #2. Disk Management - Medium
  3. #3. DiskPart Command Lines - Hard

These three Windows 10 partition resizing tool allows you to resize hard drive partitions under Windows 10 32 bit and 64 bit OS. 

If you are a Windows beginner or prefer an all-in-one tool that helps to extend and shrink volume for free in Windows 10, pick as EaseUS Partition Master Free as your best choice.

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 Windows 10 is supported

Comparision: EaseUS Partition Master vs. Disk Management vs. Diskpart

Both Disk Management and Diskpart are Windows built-in tools that work to shrink a disk volume, like the system C drive. But they are not as efficient as third-party partition manager software - EaseUS Partition Master.

Here is a brief comparison table that will help you to pick up the best partition management tool for resizing disk partitions in Windows 10/8/7:

Feature Comparison EaseUS Partition Master Disk Management Diskpart Command
Extend Volume

√ (FAT Not Supported)

√ (FAT Not Supported)
Shrink Volume √ (FAT Not Supported) √ (FAT Not Supported)
Resize Dynamic Volume √ (FAT Not Supported) √ (FAT Not Supported)

Resize Partition (from Head and End of a Partition)

× ×

Besides resizing partition, EaseUS Partition Master also supports some advanced disk management features that you may interest in. For example:

Now, you can pick up the desired tool and follow the specific tutorials to adjust your partition size in Windows 10. 

How to Resize Windows 10 Partition with EaseUS Partition Master

Applies toExtend system partition, create, delete, resize/move, copy, merge, split, or format partition in Windows 10/8/7.

EaseUS Partition Master is designed for Windows beginners who have no experience in managing disk space on all versions of Windows computers. 

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 Windows 10 is supported

Step-by-step Guide to Resize Partition

Now, see the following steps to resize Windows 10 partition, including shrink volume and extend volume, with the EaseUS partition management tool for free:


Step 1: Locate the drive/partition

Which drive/partition do you want to adjust its size? Right-click on it and choose "Resize/Move".

choose the partition

Step 2: Resize the partition

You can either shrink the selected partition or extend it.

To shrink the partition, simply use your mouse to drag one of its ends into unallocated space. Expand the "Advanced Settings" list, where you can see the exact disk space for each partition. Once done, click "OK".

Fig. 1 Unallocated space before the drive.

drag the mouse leftwards to resize partition

Fig. 2 Unallocated space after the drive.

drag the mouse rightwards to resize partition

To extend the partition, make sure that there is unallocated space aside (if there isn't, follow the above steps to create some). In the same way, drag your mouse towards the unallocated space. Click "OK".

Fig. 3 Add unallocated space into the partition

drag the mouse towards unallocated space

Step 3: Apply changes

At this step, you will see the new disk partition information & diagram.

disk partition information after resizing

To save changes, click the "Execute Operation" button and then "Apply".

apply changes to the partition

Video Tutorial: Resize and Manage Partition in Windows 10

You can also follow this video tutorial to execute more operations in managing Windows 10 hard drive via EaseUS Partition Master.

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 Windows 10 is supported

How to Resize Partition in Windows 10 Using Disk Management

Applies to: Manually extend, shrink volumes, adjust partition size in Windows 10/8/7 for experienced users.

Windows 10 built-in Disk Management has the ability to shrink volume and extend volume. For experienced Windows users who know well how to use Disk Management, it's easy to resize partitions in using this tool.

Here are the steps to just partition size in Disk Management:

Shrink Volume in Windows 10 Disk Management:

Step 1. Press Windows + X, select "Disk Management" from the list.

Step 2. Right-click the target partition and select "Shrink Volume".

Step 3. In the pop-up window, enter the amount of space and click "Shrink" to execute.

shrink volume windows 10

Extend Partition in Disk Management on Windows 10

Limit: There must be unallocated space behind your target partition. If not, shrink one right next to your target volume.

Step 1. Press Windows + X, select "Disk Management" from the list.

Step 2. Right-click the target partition and select "Extend Volume".

Step 3. Click "Next" in the Extend Volume Wizard window.

Step 4. Adjust the space that you need to extend the target volume. Click "Finish" to confirm.

Extend Volume

Then Windows 10 partition resizing operation is done. You can also repeat the process above to right-click a volume and select "Format", "Delete Volume", "Change Drive Letter and Paths...", etc., to execute more operations on your Windows 10 partitions. 

How to Shrink/Extend Volume Windows 10 with Diskpart

Applies to: Resize partitions, shrink or extend volume in Windows 10 among Windows administrators.

Windows Comand Prompt is usually not seen by most of our users unless they know how to access it. It's an administrator tool for IT managers to adjust computer settings. It also works to adjust partition size, including extend or shrink partition, delete partition, format partition, and clean hard drive, etc. 

If you're willing to challenge yourself and try to shrink partitions using this way, here's the full guide.

Shrink Volume using Diskpart in Windows 10

Step 1. Press Windows + R to bring up the Run box.

Step 2. Type diskpart and hit Enter.

Step 3. Type the following command lines and hit Enter each time:

  • list volume. (Note the number of the volume you want to shrink.)
  • select volume <volumenumber> ("x" refers to the target volume number.)
  • shrink desired=<desiredsize>

Step 4. Type exit to finish and close Diskpart.

shrink volume diskpart windows 10

Extend Volume in Windows 10 Using Diskpart

Limit: There must be enough unallocated space behind your target partition. If not, shrink one right next to your target volume.

Step 1. Press Windows + R to bring up the Run box. 

Step 2. Type diskpart and hit Enter.

Step 3. Type the following command lines and hit Enter each time:

  • list volume. (Note the number of the volume you want to shrink.)
  • select volume <volumenumber> ("x" refers to the target volume number.)
  • extend size =<desiredsize>

Step 4. Type exit to close Diskpart.

Besides this, you can also apply Diskpart to format partitions, delete volumes, and even clean a whole hard drive with cmd lines.

The Bottom Line

On this page, we collected 3 best partition resizing tools for Windows 10/8/7 users to apply for disk partition management. Among the above three tools, EaseUS Partition Master is beginners' best shot.

Disk Management is for experienced users. As for Diskpart, if you are not an administrator, we don't recommend you to try it. It's hard and not user-friendly. Any mistake may cause serious results.

If you have further questions in resizing Windows 10 partitions, check out the FAQs below.

People Also Ask - Windows 10 Resize Partition FAQs

1. Can Partition Magic resize Windows 10 partition?

Not anymore. Partition Magic runs on Microsoft Windows 98, Me, NT, 2000, and XP, but Windows Server 2003, Windows Vista, Windows 7, Windows Server 2008, Windows Server 2012, Windows 8, and Windows 10 are not supported by Norton Partition Magic.

2. What is shrinking a volume?

The shrink operation means the practice of trying to decrease the size of one hard drive partition to create unallocated space which you can use it for many purposes. You can add the unallocated space to the other partition which needs more space or simply create a new partition with a drive letter on the unallocated space.

3. Does shrinking a volume erase data?

As explained, shrinking the volume is to create unallocated space, but it won't affect the existing data. No matter you are using the Disk Management, EaseUS Partition Mater, or DiskPart command, basically no data loss will occur. 

4. Cannot shrink partition not enough space

If the disk volume you're trying to shrink contains unmovable files and those unmovable files are happen to be in the middle of the hard disk, you are likely to receive this error.

5. Cannot shrink a volume beyond the point

When you shrink a partition, certain files like the paging file or shadow copy storage area cannot be automatically relocated, so you cannot decrease the allocated space beyond the point where the unmovable files are located.

√ (FAT Not Supported)

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Frequently Asked Questions

Why Choose EaseUS Partition Master?

"I've used Partition Master Professional many times to create, delete, format, move, rename, and resize partitions."PCWorld

"Partitioning tools have come a very long since the days of complicated command line utilities and EASEUS Partition Master is one of the most advanced programs available."TECH ADVISOR

"I love that the changes you make with EaseUS Partition Master Free aren't immediately applied to the disks. It makes it way easier to play out what will happen after you've made all the changes."Lifewire

Will the "Migrate OS" feature transfer the Windows system files only or the whole C drive?

To ensure that the migrated system will boot normally, the Migrate OS feature will transfer all the files in the system and the boot partitions. Generally, the boot partition is the C drive so the transfer will include all the files in C.

Does EaseUS Partition Master license apply to multiple computers?

The license of Partition Master Professional and Server editions can be used on 1 computer only, while that for for the Technician and Unlimited editions can be used on multiple machines.

What is the difference between EaseUS Partition Master Trial version and the Free version?

Free is for home users only, with most basic functions available such as partition resize and clone. While trial can help you understand how this product works and test what a full license can do on a business or server OS machine.

Will it cause any data loss after resizing the partition in EaseUS Partition Master?

Generally, it will not cause any data loss or boot issue by resizing a partition. However, in order to protect your data, we suggest that you backup the partition before resizing, in case of any unexpected situations such as power outages, computer hardware failures, etc. You can use EaseUS Todo Backup to backup the partition and its trial version is fully functioned for 30 days.

What should I prepare before resizing the partition?

On the partition that is going to be operated, there might be some files being occupied by other programs. To ensure a successful operation, we suggest that you close all the unnecessary software before resizing that partition. Otherwise, EaseUS Partition Master will detect the partition being locked by the other software and require a reboot to resize the partition under boot mode.

About EaseUS Partition Master

All-round disk & partition management software for personal and commercial use. Let it manage your storage drive: resize, format, delete, clone, convert, etc.

Video Tutorial

How to Partititon a Hard Drive on Windows 10/8/7