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How to Create System Clone in Windows Easily

AOMEI Post By AOMEI Updated December 28, 2023

System Clone is a powerful and essential feature in AOMEI Backupper that allows users to clone the entire system partition along with all related partitions required for the system to run smoothly to a designated destination location while ensuring a secure boot. 

The System Clone function is particularly useful in the following situations:

1. Upgrading to a Larger Disk: As our data storage needs grow, a larger disk becomes necessary. System cloning facilitates a seamless transfer of the entire system, along with all data and configurations, to a new and larger disk. This process ensures that we have sufficient storage space for our expanding data and allows the computer to function smoothly without storage-related performance issues.

2. Upgrading to SSD: SSDs offer significant performance advantages over traditional mechanical hard disks. By using system cloning, we can effectively migrate our existing system to an SSD, reaping benefits like faster boot times, quicker application launches, and overall improved system responsiveness. This upgrade enhances the overall computing experience and productivity.

3. Replacing Aging or Faulty Disks: As disks age or develop issues like bad sectors, their reliability, and performance may degrade. System cloning provides a solution to migrate the entire system to a brand new disk, eliminating potential problems and ensuring data integrity and stability. This replacement extends the lifespan of the system while minimizing the risk of data loss due to disk-related issues.


Create System Clone in Windows 10 step by step

Prerequisites for system clone: 

Please boot the Windows system that you want to clone and install AOMEI Backupper. AOMEI Backupper currently supports Windows system clone only.

Connect the appropriate target disk on the computer and please make sure the destination space should be larger than or at least equal to the total used size of all system partitions. 

Note: System Clone is a paid feature, you need to upgrade to AOMEI Backupper Professional. If you want to clone a server system, please use AOMEI Backupper Server Edition. And, if you need to clone for multiple computers, you can consider Tech or Tech Plus Edition.

Detailed steps about how to clone the system in Windows 10

1. Launch the system migration software - AOMEI Backupper Professional. Then, click Clone on the left column then select System Clone.

System Clone

2. The system-related partitions are selected as source by default.  You only need to select a partition or unallocated space on the target disk that you want to clone your system drive to.​

Select Destination Disk

If the selected destination location is partitioned, a window will pop up to prompt that this partition will be deleted or overwritten, click "OK" to continue. Please make sure that there aren't some important data on this partition, or else they will be overwritten.


3. Then, you will access the Operation Summary window, confirm the drive information and click Start Clone to perform system clone to SSD or HDD.

System Clone to Larger Drive

Helpful cloning feature you may need:
"Sector by Sector Clone": It’s to copy all sectors of the system partitions, and migrate it to larger drive, HDD or SSD. And it may take more time to complete. Don't tick this feature if the destination disk is smaller, otherwise the cloning process will fail.
"SSD Alignment": This option can also be selected to optimize the performance if the target is an SSD.
"Make full use of disk space": It ensures that all the unallocated space on the target disk is fully utilized and it is checked by default if you are moving system to a larger drive.

After cloning successfully, you still need to check if the cloned drive or SSD is bootable. Please follow the steps below:

  • Shut down the computer completely.
  • Remove the source drive from the disk drive bay and install the newly cloned drive or SSD on it.
  • Then restart the computer to let it boot from the new drive or SSD. You may need to enter the BIOS/UEFI settings and ensure the newly replaced disk is the first bootable device if it’s not bootable.

Change Boot Order

If the cloned system can't boot, please check the following items:
1. Please make sure the new drive is connected internally when you set it to boot. You can remove the source disk and connect the target disk to the same slot boot. If you connect the target disk to the second internal slot, you need to modify Boot Priority to select the new drive as the first boot option in BIOS/UEFI.

2. Please confirm that you are booting the destination disk on the same machine that you do the clone. If you would like to clone the system to another computer to use, we advise you to run a system backup on a working machine and use the feature "Universal Restore".

3. If the current system drive and the target drive are different disk types ( for example, one drive is MBR and the other one is GPT), it is recommended to convert the target drive to the same type as the source drive via Windows Disk Management and then do the clone. 

4. If you indeed want to clone OS from MBR to GPT disk, please confirm that your motherboard supports EFI/UEFI boot. And, you also need to change the boot mode to UEFI when you boot from the cloned system.

  • If you also want to clone data partitions on the system disk, you can try Disk Clone.
  • We don't suggest that you use Partition Clone way to clone C: drive only.  If so, the cloned drive might be unable to boot.
  • For MBR disk, System Clone will clone the system reserved partition (“system” partition) and C: drive("boot" partition). For some environments, there is only C: drive as system partition, which includes “System” and “Boot” files.
  • For GPT disk, System Backup backs up the EFI partition, C: drive, and system recovery partition.


You can easily perform system clone to another drive, HDD or SSD, with a reliable system migration software - AOMEI Backupper Professional. It supports cloning all kinds of disks, regardless of disk type (MBR, GPT) and interface (SATA, NVMe, M.2, PCIe, etc). And it also provides other highlight features to make this process easily, such as, Make full use of disk space, SSD Alignment, Sector by Sector Clone, etc. 


Q: Why the target drive I would like to clone to is not listed?

A: Please check if the target disk is 4096 bytes/sector. You can press Win+R, type “msinfo32” in the Run box, then open Components-->Storage-->Disks-->check the Bytes/sector of the drive. AOMEI Backupper currently doesn't support 4096 disk. 

Please check if the target disk is a dynamic disk. AOMEI Backupper currently can't clone system to a dynamic disk. You can delete all partitions on the dynamic disk via Windows Disk Management, and then it will be a basic disk.

Q: When you do the system clone, it shows the error message: The program did not find the system partition. Please reboot the system and try again.

A: Please check the following items:

1. Please check if the system disk is 4096 bytes/sector. You can press Win+R, type “msinfo32” in the Run box, then open Components-->Storage-->Disks-->check the Bytes/sector of the drive. AOMEI Backupper currently can't list 4096 disk. So, it can't back up for 4096 disk.

2. If the disk is 512 bytes/sector, but it also failed to be listed, please try to uninstall AOMEI Backupper, and reboot computer, and then reinstall it again to check.

3. If you are using WinPE environment of AOMEI Backupper, it might be that the WinPE lack of the drives of disk. So, WinPE can't read the disk. You might need to recreate the WinPE and manually add the drivers. 

4.  It might be that some other applications are protecting the system partition from being read by other software. Currently, we found that RollBack Rx, Reboot Restore Rx and Drive Cloner Rx software will protect system partitions, and make AOMEI Backupper can't access system partitions. In this case, you might need to uninstall the software so that AOMEI Backupper can do the system clone.

Q: After cloning OS, will the source system be deleted or not bootable?

A: System clome won’t take any effect on the source system so you can still boot from the source system drive.

Q: Can I manually delete or wipe the original OS drive as a data drive to make full use of the drive space?

A: Once the system clone is finished and your PC boots from the new drive without any problem, you can delete it as a data drive.

Click here to learn more FAQs.