By Dylan / Last Updated December 17, 2020


Clone only used space on 2TB to 500GB

I installed a new 500 GB Samsung SSD 850 EVO in my system. And I want to clone used space on my old hard drive to it to faster performance. And I will use the SSD as booting disk. Is it simple? Thanks!

- Question from

Why need to clone only used space?

When you are going to upgrade your hard drive to SSD or larger HDD, or back up vital data, it is a good idea to clone the data on the original disk to the SSD or HDD to spare you from reinstalling system, software, and moving bunch of data.

A hard disk contains used space and unused space. Cloning the whole hard drive sector by sector, undoubtedly will be time-consuming. Particularly, if you want to clone disk to a smaller SSD, cloning both used and unused space will be impossible unless you shrink the partition size. So many users seek a simple methods of cloning only used space to an HDD or SSD.

Powerful cloning software to clone only used space

AOMEI Partition Assistant Standard is one of the best cloning tools and provides option called “Clone Disk Quickly” that clones only used space and data leaving out all empty space. It supports copy data on various storage devices such as hard drive disk, solid-state drive, SD card. This cloner performs well in following aspects to meet different cloning demands.

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Clone larger disk to smaller disk: Considering most SSDs are smaller than HDDs, AOMEI Partition Assistant supports cloning to a smaller disk as long as the destination disk is able to contain cloned data.
● Migrate OS to SSD: It is specially for users who just want to clone system. It helps a lots for some certain scenario like you have a new PC and don’t want to reinstall the Windows.
● SSD partition alignment: If the destination disk is an SSD, because of distinct SSD sector structure, it can be aligned to further improve its performance. And this cloning tool supports SSD partition alignment during the process.
● Boot from the destination disk: When you complete the cloning operation, the destination disk can successfully boot your PC if it contains a full operating system.

✍ Note: Standard version helps you clone MBR system disk to MBR disk. If you need to clone a MBR disk to GPT, GPT to MBR, GPT to GPT, please upgrade to Professional version.

How to clone only used space in HDD/SSD?

Now connect your drive with your PC. Then install AOMEI Partition Assistant and refer to the following steps to see how it works.

Step 1. Open AOMEI Partition Assistant, and click “All Tools” on the Wizard column, and choose “Disk Clone Wizard”.

Disk Copy Wizard

Step 2. Tick “Clone Disk Quickly” that will clone only used space to another HDD or SSD. Then click “Next”.

Copy Disk Quickly

Step 3. Choose the drive you want to clone.

Source Disk

Step 4. Choose the destination disk.

Target Disk

Step 5. Here, you could edition the partition size on the destination HDD/SSD.


Remember the note about booting from the targeted disk. And click "Finish"


Step 7. Then in the main terface, click "Apply" to check the cloning operation. Click "Proceed" to commit the operation.



As you can see, AOMEI Partition Assistant is a convenient way to clone only used space on HDD to HDD/SSD in Windows. When the process is completed, shutdown your PC and place the destination disk on the original disk. If you don’t need to the old hard drive and want to give it way, in consideration of security of data, we strongly suggest you to wipe the old hard drive after clone, instead of deleting data to Empty Bin.

In addition, AOMEI Partition Assistant is a leading in disk management. You can turn to Professional version to deeply manage your disk by its various features, including split partition, SSD partition alignment, allocated space free, and so on.