By AOMEI / Last Updated June 23, 2017

Part of Windows 7 users found that sometimes, Windows Disk Management cannot extend volume or shrink volume, and they need to figure out a way to free resize partition Windows 7. well, the AOMEI Partition Assistant Standard Edition is a totally free disk partition software for managing and optimizing hard drive for your PC and laptop. It allows you to resize partition in Windows 7 free, Besides, it has many other free features such as create, delete, format partition, etc. AOMEI Partition Assistant supports all Windows PC operating systems including Windows 10, Windows 8/8.1, Windows 7, Windows Vista, Windows XP, both 32bit and 64bit.

Here are the detailed steps for how to free resize partition in Windows 7 by using AOMEI Partition Assistant.

How to resize partition in Windows 7

AOMEI Partition Assistant allows you to extend partition or shrink partition more flexible. Just free download this software, install and launch it. Then, follow the next content to extend or shrink volume.

Extend Partition

If there is unallocated space adjacent to the partition needed extend, you can resize Windows partition directly.

Right click the partition, select Resize Partition.

Resize Partition

Then, it will pop up a window that you can resize partition by dragging the double-headed arrow towards to the unallocated space. Click OK.

Extend Partition

You will back to the main interface, and it will show that you have already extended partition with unallocated space. Click Apply.

Apply Extend

If there is no unallocated space adjacent to the partition you want to extend, you can take use of Merge Partitions to extend partition with non-adjacent unallocated space, or a contiguous partition.

Right click the partition you need to extend, select Merge Partitions.

Merge Partition

Then, it will pop up a window that you can choose to merge partitions.

Select Disk

Tips: You can choose the unallocated space in anywhere or the contiguous partition. Merge Partitions allow you to merge two partitions one time.

After that, you will back to the main interface, don’t forget to click Apply to submit the whole operations.

Apply Merge

Besides, you can allocated free space on other large partitions to extend partition with AOMEI Partition Assistant Professional Edition.

Shrink partition

If you want to shrink partition on the disk, the AOMEI Partition Assistant can provides you a simpler and safer way to shrink volume.

Right click the partition you want to shrink, select Resize Partition.

Shrink Partition

Then, you drag the double-headed arrow toward inside flexible, or type the amount you want to shrink in the blank space. Click OK.


Back to the main interface, you can see that the partition has been shrank and there is an unallocated space behind the partition. Click Apply to execute the task.

Apply Shrink


  • Shrink system partition may execute under PreOS Mode.

  • If there are some page file or AOMEI Partition Assistant installation file running, it will be execute under PreOS Mode.

  • If there are still some programs running on the partition, AOMEI Partition Assistant will suggest you close the running program, or the proceed will be executed under PreOS Mode.

AOMEI Partition Assistant is such a outstanding software that you can use to free resize partition in Windows 7/8/10. It is a great tool that can free manage partition for Windows 7, Windows 8 and Windows 10. Besides changing partition size, you can also use it to create partition from unallocated space. It still has many advanced features like convert disk between MBR and GPT, change file system from FAT32 to NTFS or vice versa without losing data, etc.