How to Clone Large HDD to Smaller SSD Easily?

December 18, 2014

How to clone large HDD (hard disk drive) to smaller SSD (solid state drive) in Windows 8.1/8/7/XP? The answer is in this article, with a great tool named AOMEI Partition Assistant Professional Edition, you can do this easily and without data loss.

Nowadays, thanks to the development of SSD technology, its price becomes much cheaper than before. More and more people decide to give it a try. So they want to find a software to clone HDD to SSD.

Compare to traditional HDD, SSD has these advantages: First, its full name is solid state drive, while HDD is hard disk drive, so the materials of them are different, their work theory are different as well. The reading and writing speed of SSD are much faster than HDD, the noise of SSD is quieter. When the system is running, calorific value of SSD is smaller than HDD. good aseismic performance, energy saving are another distinct advantages of SSD, that’s why more and more notebooks use SSD instead of HDD now.

However, if you used HDD before, and all of your data are in it, what to do? The answer is obvious - cloning. Clone from HDD to SSD. Usually, the size of SSD is smaller than HDD. So the question in detail: How to clone large HDD to smaller SSD?

To solve this problem, you should have a tool. Here, I recommend you try AOMEI Partition Assistant Pro. It is a professional partition management software and also works on hard disk. Copy disk is one function of it. If your large HDD is 250 GB, but there are only 40 GB full of data. You can clone it to a smaller SSD, for example, a 64 GB SSD, 128 GB. Following are concrete steps:

Download AOMEI Partition Assistant Professional Edition from the official website and install it. Make sure your smaller SSD has been connected to your computer and it is blank, or say, unallocated space. If there were something important on it, you’d better backup it, because when cloning, the original data will be covered. Now run AOMEI Partition Assistant Professional Edition, on its main interface, right click the larger HDD (Disk 1), you can find the “Copy Disk” option. Our goal is copying Disk 1 to Disk 3 (smaller SSD). I will tell you some key points in the following paragraph.

Copy Disk

1.Select “Copy Disk Quickly” rather than “Sector-by-Sector Copy” as copy disk method. Because you are cloning a large disk to a small one, only in this way, you can copy the used space to the new one successfully.

Select copy Method

2.Check the box - “Optimize the performance of SSD” to improve the reading and writing speed of SSD.

Select Disk

3.Edit the partitions according to your needs.

Edit Disk

4. Then all is OK, click the “Apply” button to commit the changes.


When talk about the topic “Clone large HDD to smaller SSD”, users may come to another situation. They just want to move the operating system from HDD to SSD. How to do? Directly copy and paste is impossible. Don’t worry, with the above mentioned software: AOMEI Partition Assistant Professional Edition, you can easy to do because of its great feature - Migrate OS to SSD. Here is tutorial: /help/migrate-system-wizard.html

When you use it, you can find it is a wonderful program. Disk/partition questions such as “Clone large HDD to smaller SSD” for AOMEI Partition Assistant Professional, just like a piece of cake. We can say proudly, for Windows users, AOMEI Partition Assistant is an essential application.