How Do I Clone MBR Disk to GPT SSD?

"My current 2TB computer hard drive was dying, so I bought a replacement 3TB SSD which requires GPT partitioning. Now, I want to move the entire contents of my old drive to this new drive keep it bootable. Is there any way that allows me to clone the MBR partitioned drive to a GPT partitioned SSD?"

Above is a user case saying that he/she wants to clone a 2TB MBR partitioned hard drive to a 3TB SSD that requires GPT partitioning, but doesn't know if it is available. Luckily, the answer is Yes. If you're in the same case, you could read this article to check how to clone from MBR to GPT.

Three Steps to Clone MBR to GPT Without Boot Issue

When your old hard drive is full, you may want to upgrade the system disk or replace it with a newer or larger HDD or SSD to get better performance. You only need three steps to clone MBR to GPT without a boot issue.

clone mbr to gpt with three steps

1 - Convert the GPT to MBR

Many users want to clone disks from MBR to GPT, for the advantages of GPT disks. Nowadays, hard disk drives are getting more capacity, and disks beyond 2 TB are often used in building computers, so many large hard drives or SSDs are initialized as GPT disks by default for making full use of the free disk space on a large drive. 

However, you cannot clone MBR to GPT because the cloned disk cannot boot. If you want to clone the MBR disk to the GPT disk you must convert the GPT to MBR first.

2 - Clone the MBR to the "GPT" Disk

After you have converted the GPT disk to MBR, you are able to clone the old MBR to the new "GPT"(It has become MBR) disk. A third-party disk clone software - EaseUS Todo Backup can help you do it by cloning HDD to SSD or new HDD.

But in some special situations, for example, your old hard drive is an MBR partitioned boot disk and your new HDD or SSD is GPT partitioned disk, in this case, you will be required to clone the MBR disk to a GPT disk or SSD. It is a little bit difficult to manage the job as a bootable issue will happen in high chances if you simply clone MBR HDD to HDD or SSD with a GPT partition table. Do remember to convert the GPT to MBR first and start the cloning process.

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Step 1. Launch EaseUS Todo Backup and click "Tools" at the top right corner, you can see clone and other utilities.

system clone step1

Step 2. Choose the source disk or partition as well as the target disk. (Make sure the space of the target disk is larger than that of the source disk or partition.)

clone disk step3

Step 3. The clone would permanently wipe out all data on the target disk/partition. If you have backup your data in advance, just click "Continue."

clone disk step4

Step 4. Click "Proceed" to start cloning.

clone system step4

3 - Convert the "GPT" Disk to GPT Again

After you have successfully cloned the old MBR disk to the "GPT" disk, restart your PC and boot from the "GPT" disk.

Very Important:

To make sure that you don't have any booting problems before you convert the MBR to GPT, you must know the following things:

  • Your operating system is 64-bit.
  • Your computer allows UEFI mode.
  • Change boot mode to UEFI before booting from the GPT disk.

After you have known the notices, you can then convert the MBR disk to GPT. Before you can boot from this GPT disk, you need to boot into BIOS and change legacy to UEFI boot mode.

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Migrate OS from SSD to M.2 SSD with Clone Software

"If you want to clone SSD to M.2 but don't know where to start, this page will help you out. It's a perfect beginner's guide, telling you what you should do from the beginning to the end. Most importantly, we have recommended a great tool - EaseUS Todo Backup. You can simplify the cloning process with its clone feature.

Migrate OS to SSD

Bonus Tip: How to Check If Your Computer's Boot Mode

If you don't know what is your computer's boot mode, follow the guide below to check.

Step 1. Press Windows + R keys to open the Run box, type msinfo32 and press Enter.

Step 2. Then you could see the System Information window.

Step 3. Find the BIOS Mode item, the value in the right side shows your computer's BIOS Mode is Legacy or UEFI.

Check computer's boot mode

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Updated by Daisy

Daisy is the Senior editor of the writing team for EaseUS. She has been working in EaseUS for over ten years, starting from a technical writer to a team leader of the content group. As a professional author for over 10 years, she writes a lot to help people overcome their tech troubles.

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Written by Roxanne

Roxanne is one of the main contributors to EaseUS and has created multiple posts on digital devices like PCs, Mobile phones, tablets, Mac, etc. She loves to share ideas with people of the same interest.

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