4 Steps to Clone M.2 SSD to Larger M.2 SSD Safely

Posted by @Ailsa

January 16, 2019

This page shows how to clone old and small M.2 SSD to larger and new M.2 SSD with ease. Secure boot is ensured.

The Case

"I recently bought a larger M.2 SSD for my laptop’s SSD upgrade, a Samsung M.2 850 256GB SSD, but I have a question that how am I going to clone my current 120GB M.2 SSD drive onto my new larger M.2 SSD? How should I get there?"

About the M.2 SSD drive

First, what is M.2 SSD? We should have a basic understanding. With the development of simple and convenient design concept, the electronic devices become small and exquisite like the Ultrabooks or tablets. Thus, the component like SSD drive has to be made smaller than before to fit the device. As far as I know, SSDs have different forms according to its physical expansion interface standard.

SATA (or mSATA) SSD uses the PCI Express Mini Card physical card layout and connectors, and widely used in SSDs. However, M.2 (formerly known as Next Generation Form Factor (NGFF)) SSD is more flexible and suitable than SATA SSD especially for small devices, which allows different module widths and lengths to adjust different connectors. Smaller size and faster speed becomes its characteristic.

Overview of M.2 SSD to M.2 SSD Clone

Generally speaking, many small devices like laptops, Ultrabooks, tablets come with a small capacity of SSD drive as boot drive. With programs and games installed, you’ll find there is no enough space to operate. So, you’ll clone M.2 SSD to larger M.2 SSD drive to expand your system partition free space. Then you would get a short boot time and a speed-up performance afterwards. So how to clone SSD to M.2 SSD drive?

To preview the steps, you can run the best SSD to SSD cloning software - AOMEI Backupper Professional that makes you clone Windows OS, installed programs, personal files from a smaller M.2 SSD drive to another larger M.2 SSD with data intact in Windows 10/8/7/XP/Vista.

How to Clone M.2 SSD to Larger M.2 SSD Step by Step?

Step 1. Connect the larger M.2 SSD drive with your computer. Install and run the program, on the main interface, at the “Clone” tab, select “Disk Clone”. To clone OS drive only, click "System Clone" then. 

Disk Clone

Step 2. Select the original small M.2 SSD as source disk, and hit “Next” to go on.

Source Disk

Step 3. Choose the larger M.2 SSD as target disk to save all the data from source disk. Then press “Next”.

Destination Disk

Tips: The destination disk will be override after the operation, please backup important data on it first.

Step 4. At the “Operation Summary” window, tick “Align partition to optimize for SSD”. Then click “Start Clone”.

Start Clone


  • You can also tick “Sector by sector clone” to clone all sectors on the source disk whether the sector is in use or not.
  • You may also edit partitions on the destination disk to fit the disk.

Wait for a few minutes, the cloning will be completed. By the way, the cost time will depend on the data size on source disk. After you the cloning finished, shut down your laptop, take out the small M.2 SSD and put in the larger M.2 SSD drive.

Besides, you may want to clone SSD to smaller SSD in some circumstances like move only operating system drive to new SSD, or clone a specific partition to the target disk with partition clone. Now, you can have a try.