By Teresa / Last Updated March 4, 2021

Samsung 850 EVO Data Migration Failed

“I have an old and slow hard drive with 500GB disk capacity on my computer, and I want to clone the hard drive to Samsung 850 EVO 120GB SSD that I bought days ago with its Samsung Data Migration software. I was succeeding in the first three pages but I can never march to the last one. It gave an error saying: Cloning failed. An error occurred while defragmenting the disk. 303300[04a0c4]. How could I achieve the disk cloning?”

Samsung 850 EVO cloning failed

Search online, it is not hard to find that many users are searching answers for Samsung Data Migration tool cloning failed. There are also help post for Samsung SSD 850 PRO or 840 PRO cloning failed. Why would this happen?

Samsung SSD 850 EVO Data Migration Failed: Why and How to Fix?

The following factors might be the reason that causes Samsung Data Migration failed to clone in Windows 10, 8, 7, or XP. Check the error and find its corresponding solution. First of all, make sure the Samsung Data Migration software is of the latest version.

  • Error occurred while adjusting partition size

The complete error prompt is: Cloning failed. An error occurred while adjusting partition size. 400180[061b34]. This error may be caused by inappropriate partition size on original hard drive. It is suggested to reboot your PC and extend or shrink system drive a bit. Then, connect SSD via SATA or via USB to start cloning.

  • Error occurred while defragmenting the disk

This complete error message is: Cloning failed. An error occurred while defragmenting the disk. 303300[04a0c4]. This could be the problem of original hard drive or the target Samsung 850 EVO. Therefore, the suggestion would be defragment your hard drive or reset Samsung SSD to factory default before taking any actions.

  • Failed to retrieve source information

If you get “Failed to retrieve source information” with Samsung Data Migration, you probably are cloning from large hard drive to smaller Samsung 850 EVO or cloning non-Samsung disk to Samsung SSD. For the first situation, it is advised to delete useless files on hard drive. As for the second case, one free Samsung 850 EVO data migration tool which is more compatible with disk will be recommended below.

  • Samsung Data Migration cloning failed in Windows 8

If you get Samsung 850 EVO cloning failed on Windows 8, right-click the Samsung Data Migration icon on your desktop and select “Troubleshoot Compatibility”. Then, Windows will run a check and run the solution that was provided in Windows 8 compatibility mode.

  • Other errors

Given that you get an error like Samsung Data Migration cloning failed due to bad sectors or other errors that not mentioned before, you may take these measurements to fix:

1. Disable the Page File [Computer (This PC) > Properties >Advanced > Performance > Advanced > Change > uncheck “Automatically manage paging file size for all drives” > select “No Paging File”]; 2. Disable Windows System Restore Points [Computer (This PC) > Properties >System Protection > turn off Restore Point Protection]; 3. Disable Hibernation Files [Control Panel > Power Options > Advanced Settings];

All-around Samsung 850 EVO Data Migration Software for Windows

Suppose you cannot solve the cloning failed issue with the aforementioned solutions or you find it is a little complicated to operate yourself, try this free disk cloning software for Samsung SSD cloning in Windows 10, 8, 7, Vista and XP, AOMEI Partition Assistant Standard.

One quick fix for Samsung 850 EVO Data Migration error is to complete disk cloning with one another professional cloning software. AOMEI Partition Assistant allows you to clone hard drive to Samsung 850 EVO SSD as well as other Samsung SSDs, regardless of hard drive brand. This software also provides a solution to clone a hard drive to a smaller Samsung 850 EVO as long as the disk space is sufficient to fit all data. Download this freeware to take a closer look.

Download Freeware Win 10/8.1/8/7/XP
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Steps to Clone Hard Drive to Samsung SSD EVO in Windows 10

Just to be on the safe side, you’d better back up important data to a safe place before you start. Disk cloning won’t cause data loss yet it may be caused by inappropriate operations or unexpected situations. To fix Samsung Data Migration cloning failed on 850 EVO in another way:

1. Connect the Samsung 850 EVO to your computer and make sure it can be detected (if not, please refer to Samsung 850 EVO not detected in Windows 10). Install and launch AOMEI Partition Assistant Standard.

2. Click on "Disk Clone" on the left side.

Disk Copy

3. Choose copy method accordingly. Note that “Clone Disk Quickly” is a good way to escape hard drive bad sectors and save time.

Copy Disk Quickly

4. Disk 1 is the source disk. Select the Samsung 850 EVO SSD as the destination disk. Check “Optimize the performance of SSD” will improve SSD reading and writing speed as well as SSD lifespan.

Select Destination Disk

5. You have options to edit partitions on target SSD as you wish.

Edit Disk

6. Preview the virtual outcome and click “Apply” and then “Proceed” to execute pending operations.


7. Shut down your computer and swap hard drive with cloned Samsung 850 EVO SSD. Then, boot from that drive.


  • Reboot is required when cloning system disk.

  • “Sector-by-sector Clone” method is a good way to recover formatted partition or deleted files where no new data has been written to. Partition cannot be edited under this method.

  • The above steps can be used as a strategy for Samsung 850/840 PRO cloning failed issue.

  • AOMEI Partition Assistant Professional supports to clone hard drive to SSD between MBR and GPT partition styles.

  • Reformat old hard drive if you want to use it as extra storage. Do not format unless you make sure everything on the new SSD works perfectly.


Certainly, it is good to solve Samsung 850 EVO data migration failed with several computer settings. However, a powerful alternative SSD cloning tool is also not a bad choice. AOMEI Partition Assistant can help you move OS only to Samsung SSD as well.