By Bryce / Last Updated April 23, 2020

Can I clone GPT disk to MBR SSD successfully?

“I have a Lenovo computer running Windows 10 that is installed on a GPT HDD. I want to replace the old HDD with my newly purchased SSD to improve my booting speed and I’m unwilling to reinstall Windows and other applications. I realized that I can transfer all data from disk to another by disk copy. But is it available to clone GPT HDD to MBR SSD and boot from the MBR disk without failure? Is there any advice? Thanks a lot!”

Great Disk cloning software: Clone GPT to MBR disk

It will be a simple thing to clone GPT HDD to MBR SSD as long as you employ reliable hard drive cloning software. Here AOMEI Partition Assistant Professional will be my choice out of its highlights listed below:

① It supports you to clone GPT disk to MBR and clone MBR disk to GPT as well.
② It offers two cloning methods: Sector-by-Sector Clone and Clone Disk Quickly. The second way only clones used sectors on source disk, enabling you to clone GPT disk to smaller MBR SSD.
③ It is featured with Make Bootable Media, allowing you to clone hard drive from bootable USB, which will be very useful when the computer cannot boot into Windows.
④ It can help you to migrate only OS related partitions via Migrate OS to SSD Wizard when the target disk is not big enough to store all data saved on the source disk.
⑤ What's more, With an intuitive and concise interface, it is very easy to handle even for a newbie.

After realizing AOMEI Partition Assistant Professional, it is time to know how to clone GPT hard drive to MRB SSD/HDD using this disk cloning software.

How to clone GPT disk to MBR without boot failure?

Before starting cloning GPT to MBR disk, you should know something presented as follows:

▪ All data on destination MBR disk will be overwritten, thus it is advised to backup important data on the MBR disk before cloning.
▪ If you need to clone GPT hard drive whose used space is over 2TB to MBR disk, you can convert MBR disk to GPT in Windows at first as MBR partition style supports up to 2TB hard drive.
▪ If the GPT disk owns more than 4 primary partitions, you can merge partitions or delete partitions to decrease partition number as MBR disk supports up to 4 primary partitions or 3 primary partitions and one extended partition.
▪ GPT disk works with Extensible Firmware Interface (EFI) or the Unified EFI (UFEI) while MBR disk works with simple firmware Basic Input/Output System (BIOS). Thus, to boot computer successfully, you should change boot mode in BIOS after switching from GPT disk to MBR disk.

Let’s have a closer look at how to clone GPT disk to MBR using AOMEI Partition Assistant Professional.

▶ PS.: It's available to free download the demo version of AOMEI Partition Assistant Professional to have a try!

Step 1. Connect the MBR SSD to your computer and ensure that it can be detected by operating system. Install and run the hard drive cloning software. Then, Choose All Tools and Disk Clone Wizard.

Disk Copy Wizard

Step 2. In the pop-up Disk Clone Wizard window, choose a way to clone GPT to MBR disk and click Next.

Copy Disk Quickly

Notes:

  • The first way can clone HDD to smaller SSD if the size of the used space on the HDD is not larger than the capacity of SSD.

  • If you choose Sector-by-Sector Copy, the MBR disk will be converted to GPT before cloning.

Step 3. Choose the GPT disk as your source disk and click Next.

Select Source Disk

Step 4. Choose the MBR disk as the destination disk. If it is SSD, tick the box of "Optimize the performance of SSD" to align SSD partitions. Then click "Next".

Step 5. Here you can adjust the partition size on the MBR disk. Then, click Next to continue.

Edit Disk

PS.: The option of “Copy without resizing partitions” will be grayed out when the size of destination disk is smaller than the size of source disk.

You’ll be informed of how to boot from the destination disk after cloning. Read it and keep it in mind. Then, click “Finish”.

Finish

Step 6. You’ll return to the main interface. Click “Apply”>“Proceed” to execute your operation.

Note: This process will be completed under PreOS mode and your computer will restart. Therefore, it is recommended to save everything you are editing before cloning.

After cloning, reboot your computer and press a certain key (usually, F2 or Del) to enter BIOS to change boot priority to the cloned MBR disk and switch from UEFI to Legacy. Before you boot successfully from the cloned disk, it is not advised to format or wipe your original GPT hard drive.

Conclusion

Obviously, you can clone GPT disk to MBR without boot failure under this great disk cloning software – AOMEI Partition Assistant Professional. It can help you to clone MBR disk to GPT as well. In fact, apart from disk copy and OS migration, as comprehensive software, AOMEI Partition Assistant is featured with many other functions to manage your disk in Windows 10/8/7, XP, and Vista. For example, it is able to format external hard drive to various file systems, including NTFS, FAT32, exFAT, Ext2, Ext3 and Ext4; it can also delete, resize and create partition on your disk.