banner image

EaseUS Todo Backup

  • Safely back up and restore personal files in simple clicks.
  • One-click to clone, upgrade, or transfer your system quickly.
  Free Download

Support Windows 10/8.1/8/7/Vista/XP

100% Secure

How to Clone M.2 SSD to Larger M.2 SSD on Laptop/Desktop [New]

Updated by Daisy on Feb 25, 2021
Written by Jean

On this page, you will learn what is M.2 SSD, how to upgrade and clone M.2 SSD to a larger M.2 SSD, and what to do after cloning M.2 to M.2.

  • Average Time: 3-5 Minutes Reading
  • Applies to: Clone M.2 to M.2, Clone M.2 to VNMe M.2, Clone NVMe M.2 to M.2, Clone SSD to M.2
  • Supported OS: Windows 10/8.1/8/7/Visa/XP, Windows Server 2019/2016/2013/2012, etc.
  • Tools/Must-Have Materials: 1. New M.2 SSD; 2. Disk Cloning Tool; 3. Screwdriver;

How Do I Clone My M.2 SSD to Another M.2

"I am running a 128GB SSD on my laptop. Now the disk is getting full with more and more data. So, I buy a 250GB M.2 SSD and want to use it to replace the existing 128 SSD. I don't want to reinstall the operating system as well as the installed programs, or manually migrate the files. Someone told me that I can do it by cloning the 128GB M.2 SSD to 250GB M.2 SSD, but I don't have a clue. Is there anyone who can help?"

Normally, people choose to upgrade a computer hard drive to SSD so as to optimize computer performance without reinstalling Windows nor losing data. Cloning M.2 to larger M.2 SSD also works the same, however, the process is a bit different.

Follow the guide here, you'll learn how to upgrade M.2 SSD, cloning M.2 to larger M.2 successfully on your laptop and desktop computers:

Part 1. Prepare M.2 SSD

In this part, we'll guide you to prepare everything ready for M.2 cloning. Now, follow the steps here to prepare both your PC and the new M.2 SSD:

Step 1. Check the Number of SSD Slot on PC

Open the Laptop or Desktop computer case with a screwdriver. Then check the number fo SSD Slop on your computer.

M.2 SSD slot

For one slot, you'll need to buy one M.2 SSD and one M.2 SSD USB adapter. For two slots, you just need to purchase a new M.2 SSD.

Step 2. Buy a Right M.2 SSD

M.2 SSD is defined as a gum shipped stick, studded with NAND modules and a controller chip. When you are ready to purchase a new M.2 SSD, remember three things:

Purchase a new M.2 SSD

  1. 1. M.2 SSD must share the same length of the SSD slot.
  2. 2. The higher capacity the more expensive the M.2 SSD will be.
  3. 3. Purchase an M.2 SSD USB adapter if your computer only has one stop.

It's suggested that the capacity of the new M.2 SSD should be twice or three times bigger than the old one will be fair enough.

Step 3. Install or Connect the New M.2 SSD to PC

If your computer only has one SSD stot, connect the new M.2 SSD to your computer via an SSD USB adapter. If your laptop or desktop contains two SSD slots, install the SSD:

  • On a laptop: Open M.2 slot > Slide M.2 SSD inside the slot > Screw the SSD drive in > Finalize and cover.

install m.2 ssd in a laptop

  • On a desktop computer: Find the M.2 connector, labeled as "PCIe" > Insert M.2 SSD inside the slot > Secure the M.2 SSD with the mounting screw.

install m.2 ssd in a desktop

Step 4. Initialize New M.2 SSD

To guarantee a smooth M.2 to M.2 cloning process, remember to initialize the SSD first. 

1. Open Disk Management, locate and right-click the new M.2 disk.

2. Select "Initialize Disk", set the partition style the same as the source disk (MBR or GPT)

3. Click "OK" to confirm.

Intialize M/2 SSD

Now, you are good to reboot PC and move the Part 2, starting to clone M.2 to a larger M.2 disk on your own.

Part 2. How-to Tutorial: Clone M.2 SSD to a Larger M.2 SSD

In this part, you'll get the answers to these questions: "How do I clone an NVMe M.2 Hard Drive", "How do I transfer my OS to M.2", etc. Let's start:

#1. Best M.2 Disk Cloning Software Free Download

As normal Copy and Past can only move your personal data to a new disk, but the Windows OS, system files, installed applications, account settings, etc., as still on the old disk. To upgrade and clone M.2 SSD, you'll need a powerful disk cloning software.

Powerful and easy-to-use SSD to SSD cloning software - EaseUS Todo Backup is the program you need. It enables you to flexibly clone SSD to a larger SSD with its Clone feature in only a few simple clicks.

  Free Download

Support Windows 10/8.1/8/7/Vista/XP

#2. Tutorial: Upgrade & Clone M.2 SSD to Larger M.2

Download and install the essential disk cloning software, and follow the tutorial here to upgrade an M.2 SSD to a larger M.2 SSD with ease.

Video Tutorial:

The steps of cloning M.2 to M.2 are merely the same as cloning hard drive to SSD, as shown below. Therefore, you can follow this video as a direct guide.

Step-by-Step Guide:

To clone one M.2 SSD to another larger M.2 SSD on a laptop or desktop computer, follow these steps as listed here.

Step 1. Launch EaseUS SSD cloning software and choose "Clone" to start cloning one SSD to the other larger SSD.​

choose clone to clone ssd to larger ssd

Step 2. Choose the smaller SSD as the source disk and click "Next".

choose smaller ssd as source disk

Step 3. Choose the larger SSD as the destination disk. Here, we highly suggest you tick the option "Optimize for SSD" within "Advanced options" in the bottom left corner. Click "OK" and then click "Next".

choose the larger ssd as destination disk

Step 4. If nothing's wrong on the disk layout, click "Proceed". It won't take long to clone a smaller SSD to a larger SSD.​

preview disk layout and click proceed

Part 3. Boot PC from Cloned M.2 SSD and Manage Old M.2 SSD

In this part, we'll show you how to: 1. Boot PC from the cloned SSD; 2. Manage old M.2 SSD.

Also, these two things are highly related to what to do after the disk cloning. Let's see:

1. Boot PC from New M.2 SSD

If the M.2 SSD that you cloned is an OS disk and you forgot to set it as a boot drive, you'll encounter with cloned SSD won't boot issue.

For Laptop/Desktop that has only one SSD slot:

Step 1. Replace the old M.2 SSD and install the cloned new M.2 SSD to your PC.

Step 2. Restart the PC and wait for the computer to boot up from the new disk.

For PC that has two SSD slots:

Step 1. Restart PC and press F2/F8/F11 or Del to enter BIOS.

Step 2. Go to the Boot menu, change the boot order, and set the new M.2 SSD as the boot drive.

Step 3. Restart the computer and wait for it to boot up.

2. Manage Old M.2 SSD

After booting up PC from the new M.2 SSD, you can now follow the tips here to manage your old M.2 SSD:

  • If your computer has one slot, you can connect the old M.2 SSD as an external disk, cleaning all old data. You can either choose to sell it or use it as an external data drive.
  • If your PC has two slots, you can delete all existing data and use it as a second data drive on your computer now.

Read Also: How to Partition SSD.


So, that's it. The whole process of cloning M.2 to large M.2 SSD steps are all presented on this page. Three important things that you should remember:

  1. 1. Purchase a right SSD and install it correctly to PC.
  2. 2. Clone M.2 to M.2 with the right disk cloning tool (like EaseUS Todo Backup).
  Free Download

Support Windows 10/8.1/8/7/Vista/XP

  1. 3. Set PC boot from Cloned M.2 SSD.

People Also Ask about M.2 SSD Clone

If you have more questions about M.2 SSD or disk cloning, follow the questions and answers here. Hope the answers can help you out.

1. What is M.2 and U.2, which is faster?

Accordingly, M.2 is a small-sized disk that directly connected to the motherboard. While U.2 can be defined as a high capacity disk connected to workstations and server motherboards.

U.2 SSD is much faster than M.2 SSD. U.2 used 4 PCle lanes, giving 4GB/s for data read and write while the M.2 SSD only has around 2500MB/s speed.

2. How to Move Windows to SSD?

To move Windows or migrate Windows OS to SSD, you may follow the tips here for a try:

  • Connect or install SSD to PC
  • Initialize SSD
  • Clone Windows OS to SSD via a reliable Disk Cloning Tool
  • Set SSD as boot drive and restart PC

For a step by step guide, please follow Clone Windows 10 to SSD.

3. How Do I clone an NVMe M.2 hard drive?

The steps to clone an NVMe M.2 hard drive are similar as listed on this page:

  1. 1. Connect or install a new disk to PC.
  2. 2. Initialize Disk if it's a brand new disk.
  3. 3. Clone NVMe M.2 hard drive to the target disk via disk cloning software
  4. 4. Set the new disk as a boot drive if the NVMe M.2 was a boot drive.

Was This Page Helpful?

author icon

Updated by Daisy

Daisy has been working as a technical writer for eight years. She specializes in making the complicated easy. She believes that technology should bring users satisfaction, not annoyance, so she writes a lot to help people overcome their tech troubles.

Read full bio

author icon

Written by Jean

Author Jean has been writing tech articles since she was graduated from university. She has been part of the EaseUS team for over 5 years. Her special focuses are data recovery, disk partitioning, data space optimization, data backup and Mac OS. By the way, she's an aviation fan!

Read full bio

Product Reviews

TrustScore 4.7 | 47 reviews
  • Taking everything into consideration, we can say that EaseUS Todo Backup Home can offer you a little extra sense of security with a set of advanced tools. The interface provides quick adaptation, every process guiding you all the way through so you don't get stuck or further damage your system rather than keeping it safe.

    Read More
  • EaseUS Todo Backup Free lets you create backups of your important files or your entire computer through its streamlined interface. Just choose the backup type you'd like to get started, and let the program do the reset.

    Read More
  • EaseUS includes all the features I expect from backup software like versioning, incremental backups, and scheduling. For more advanced users, EaseUS allows you to install a pre-boot environment onto your hard drive so you can use it to restore files without burning a CD or putting it on an external USB drive.

    Read More


EaseUS Todo Backup

Smart backup tool for your files and entire computer in Windows 10/8/7.

Product Reviews