Freeware to Clone HDD to SSD of Different Sizes Easily

When you need to clone HDD to SSD of different sizes, such as cloning bigger HDD to smaller SSD, you can make use of the free AOMEI Partition Assistant. Its two different clone methods make it easy to clone disk of different sizes in Windows 11, 10, 8, and 7.


By Emily / Updated on May 12, 2023

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Why need to clone HDD to SSD of different sizes?


Can I clone a 1TB HDD to a 500GB SSD?

Hello, all experts. I have a 1TB hard disk drive, but only 50GB used. Several days ago, I just got a 500GB SSD drive from my brother. So, I wonder if I can clone the 1TB HDD to 500GB SSD drive? Thanks a lot!


Compared with traditional HDD, SSD has obvious advantages in read & write speed, durability, security, more energy-saving, and less noise-making, etc. And, with the decline in SSD prices in recent years. In order to make the computer run faster and enjoy better performance, users like to replace HDD with SSD to speed up computers.

ssd vs hdd

What to do before performing HDD to SSD clone?

To clone HDD to SSD with different sizes, you need to do the following:

Get an SSD, and install it in your computer. Or, depending on the type of SSD, you can connect it to the computer with a suitable USB adapter and make sure it can be detected.


If the SSD is new, please initialize disk and set the partition style as HDD.

Ensure the normal connection of the power supply.

If there is important data in the HDD, please make a backup in advance.

Download and install professional disk cloning software.

Which is the most reliable software for cloning HDD to SSD of different sizes?

As long as you get a proper disk cloning tool, no matter you want to clone larger HDD to smaller SSD, or smaller HDD to larger SSD drive, it is really possible to do it. For this purpose, here we highly recommend the freeware: AOMEI Partition Assistant Standard. It comes with two different disk clone methods: “Clone Disk Quickly” and “Clone Sector-by-Sector”, which allow you to clone HDD to SSD of different sizes.

If you clone a smaller HDD to a larger SSD or SSD with the same size, you can do sector by sector clone which refers to clone all sectors of HDD no matter it is used or not so that you get a 100% identical copy and AOMEI guarantee the job success even there are blank sectors or logically bad sectors.
If you clone an HDD to a smaller SSD, you are allowed to clone only used space so to make a successful clone. Since there are both used and unused spaces on the drive, clone only used space will reduce the occupied space without cloning the unused space on the drive.

Next, let’s see details of how to clone HDD to SSD different sizes with the freeware - AOMEI Partition Assistant Standard.

Download Freeware Win 11/10/8.1/8/7/XP
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✍ Note: For cloning system disk, please upgrade to Professional Edition. It allows you to clone system disk from MBR to MBR, MBR to GPT, GPT to MBR, and GPT to GPT.

Steps to clone HDD to SSD of different sizes

AOMEI Partition Assistant Standard works well with all Windows editions, including Windows 11/10/8/7. Before you clone HDD to SSD, you should free download AOMEI Partition Assistant Standard.

Step 1. Install and launch AOMEI Partition Assistant Standard. Click "Clone" ->“Clone Disk” in the top panel.

Disk Copy Wizard

Step 2. In the pop-up window, choose “Clone Disk Quickly” or “Sector by sector Clone”.

Copy Disk Quickly

Step 3. Choose the HDD as the source disk (here is Disk 1).

Select Source Disk

Step 4. Choose your SSD as destination disk (here is Disk3), and tick the box before “Optimize the performance of SSD” to clone HDD to SSD alignment.

Select Destination Disk

Step 5. You can adjust the partition size on SSD here.

Edit Disk

The first option “Clone without resizing partitions” is gray out, because the SSD is smaller than the HDD here.
Fit partitions to entire disk” will adjust partitions on SSD automatically.
Edit partitions on this disk” allows you to resize a single partition once a time by sliding leftward or rightward.

Step 6. It will give you a note, read it and click “Finish” back to the main interface.


Step 7. You can preview the result, and do remember to “Apply” the operation.


After that, if you clone system disk from HDD to SSD, you need to change boot drive to run Windows from the SSD.


FAQs about clone HDD to SSD with different sizes

▶ Can I clone a larger HDD to a smaller SSD?

You can easily clone a hard drive to a smaller SSD with a few clicks, as long as the SSD is large enough to store all the data on the HDD.

Can the cloned hard disk only migrate Windows OS?

Clone hard drive can migrate everything on the source disk, including Windows operating system, installed programs, personal files, partition structure, file system, settings, etc. If you just want to clone Windows OS from HDD to SSD, please try "Migrate OS to SSD" of AOMEI Partition Assistant.

Does Windows OS have a built-in hard disk cloning tool?

Unfortunately, Windows OS does not provide any disk cloning software. But luckily, you can try third-party hard drive cloning software, such as AOMEI Partition Assistant, AOMEI Backupper, Clonezilla, Acronis True Image, etc.

Wrap things up

As you can see, AOMEI Partition Assistant Standard can clone HDD to SSD of different sizes effortlessly. In addition, there are more advanced features you can unlock after turning to Pro Edition, try it, and it will not let you down. For Server users, you can switch to AOMEI Partition Assistant Server.

Emily · Staff Editor
Emily is an English editor of AOMEI Technology; she has a great passion for providing easy solutions for people to tackle with all disk or partition management problems. In addition to writing articles about disk/partition management, she also edits great tutorials on how to back up and restore disk for data security. In her spare time, she loves to learn computer skill to improve herself or stay with her family to enjoy a good day.