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How Do I Clone M.2 SSD to Larger M.2 SSD on Laptop/PC [Complete Guide]

Updated by Gemma on Sep 24, 2021
Written by Jean
  • Average Time: 3-5 Minutes Reading
  • Supported OS: Windows 10/8.1/8/7/Visa
  • 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
  • M.2 Clone/Upgrade Tools: 1. New M.2 SSD; 2. Disk Cloning Tool; 3. Screwdriver.

"How do I clone my M.2 SSD to another 1TB M.2? The128GB SM.2 SD on my laptop is getting full. So, I bought a new 1TB M.2 SSD to replace the existing M.2 SSD. Can I clone the 128GB M.2 SSD to 1TB M.2 SSD without installing Windows?"

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 in a complete guide.

Note: If you've already bought the new M.2 SSD, jump to Step 3 in Part 1 to start the M.2 to M.2 cloning process. 

Part 1. Prepare M.2 SSD

Cloning a computer hard drive to SSD can optimize the computer performance without reinstalling Windows nor losing data. Cloning M.2 to a larger M.2 SSD also works the same. 

Before you start, follow the steps here to prepare your new M.2 SSD disk ready:

Step 1. Check the Number of SSD Slot on Your PC

  • Open the Laptop or Desktop computer case with a screwdriver.
  • Then check the number of SSD slots on your computer. 

M.2 SSD slot

Step 2. Buy a Right M.2 SSD

When you are ready to purchase a new M.2 SSD, remember three things:

Purchase a new M.2 SSD

  • M.2 SSD must share the same length as the SSD slot in your PC.
  • If your PC has one slot, buy an M.2 SSD and an M.2 SSD USB adapter. 
  • The capacity of the new M.2 SSD should be twice or three times bigger than the old one. (500GB and 1TB are hot on Amazon.)

Step 3. Install the New M.2 SSD to Laptop/PC

  • If your PC has one SSD stot, connect the new M.2 SSD to the 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, you need to initialize the SSD first. 

  • Open Disk Management, locate and right-click the original M.2 SSD.
  • Select "Properties" and check the partition style of your source SSD.
  • Right-click the new M.2 disk and select "Initialize Disk".
  • Set the partition style the same as the source disk (MBR or GPT) and click "OK" to confirm.

Intialize M/2 SSD

Now, you are good to move to 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

Here, the reliable SSD cloning software - EaseUS Todo Backup can upgrade and clone M.2 SSD for you.

What EaseUS Todo Backup Can Do?

  • Flexible and easy to use.
  • Clone SSD to a larger SSD without reinstalling Windows.
  • Copy everything on your disk to a new disk, including personal data, Windows OS, system files, installed applications, account settings, etc.
  Free Download

Support Windows 11/10/8/7

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

With EaseUS disk cloning software, follow the tutorial here to upgrade an M.2 SSD to a larger M.2 SSD with ease.

Step 1. Launch EaseUS Todo Backup and click Clone.
Then choose the source disk( the SSD) you want to clone. Click "Next".

select the smaller SSD as the source disk

Step 2. Choose the destination disk( the larger solid state drive).
Tick Optimize for SSD, it will optimize the new SSD performance. 

select the larger ssd as the destination disk

Note: If you decide to change the system disk to a larger SSD or HDD, do remember to change the boot order from the old system disk to new SSD or HDD in BIOS settings. Or you may encounter system boot failure error.

Step 3. Preview the disk layout to confirm the settings of the source and destination disk. Click Proceed to execute disk clone your SSD.

preview your disk settings and start to clone ssd to ssd

Video Tutorial of Cloning M.2 to Larger M.2 SSD

The steps of cloning M.2 to M.2 are merely the same as this video. You can also follow this video as a guide.

Part 3. What to Do After Cloning M.2 to M.2 SSD

So what to do after cloning M.2 to M.2 disk? Two things that you need to complete: 

  1. 1. Boot PC from the cloned SSD;
  2. 2. Manage and make use of old M.2 SSD.

Let's see:

#1. Make Cloned M.2 SSD Bootable - 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.

Step 1. Install the cloned new M.2 SSD to your PC.

  • If PC has one slot, replace the old M.2 SSD.
  • If PC has two slots, insert the new M.2 disk into the empty slot.

Step 2. Restart PC and press F2/F8/F11 or Del to enter BIOS.

Step 3. Go to the Boot menu, change the boot menu, set the new M.2 SSD as the boot drive.

Set new M.2 SSD as boot drive

Step 4. Press F10 or save the changes, then restart the computer.

Wait patiently until the computer boots up, log in with your account. And you can use everything on the new M.2 disk now.

#2. Manage Old M.2 SSD

Once the computer boots up, 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, wipe disk data 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 a large M.2 SSD is all presented on this page. Three important things that you should remember:

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

Support Windows 11/10/8/7

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. M.2 vs 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
related articles

Clone Windows 10 to SSD

 If you are looking for a reliable method to completely migrate Windows 10 from HDD to SSD or clone Windows 10 to SSD, EaseUS Todo Backup can be the best choice for you, though it's not the only solution.

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.

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Updated by Gemma

Gemma is member of EaseUS team and has been committed to creating valuable content in fields about file recovery, partition management, and data backup etc for many years. She loves to help users solve various types of computer related issues.

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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!

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