Fix Samsung Data Migration Interrupted for Unknown Reason

This article will introduce you to the possible reasons and solution to Samsung Data Migration interrupted for unknown reason in Windows 11, 10, 8, and 7. Also, you can try one more reliable cloning software.


By Ivy Updated on February 9, 2023

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User Case: Samsung Data Migration Interrupted for Unknown Reason 99

“I am trying to upgrade my 128GB Kingstone SSD to 500 GB Samsung SSD. Samsung Data Migration software hangs at 99% for several minutes, then the message is: The Data Migration function has been interrupted for an unknown reason. Anyone know possible reasons and how to fix this?

Data Migration Interrupted for Unknown Reason

This error is sometimes called Samsung EVO migration interrupted for unknown reason, as many users receive this problem while using Samsung EVO860/870/970 etc as target disk. To completely resolve it, learn the possible reasons and solutions beblow.

Why does Samsung Data Migration Interrupted for Unknown Reason?

Although Samsung is one of famous SSD manufacturer and its SSD disks are used worldwide, still a large amount of users complaint errors like “Samsung Data Migration has been interrupted for an unknown reason” in Windows 11, 10, 8, 7, etc. Here we summarize the most common reasons for it:

  • Loose SATA port or SATA-USB cable connection.
  • Potential hard disk errors or bad sectors. This is usually caused by the source disk.
  • The Bitlocker is turned on automatically. For example,  your operating system is Windows 7, Windows 8, Windows 8.1, or Windows 10, you enable TPM or UEFI Secure Boot in BIOS, or you have signed in with a Microsoft account.  

3 Fixes for Samsung Data Migration Interrupted for Unknown Reason

On the basis of the possible reasons, we will share with you what we found to be effective. Here are 3 methods in total. These methods applies to Samsung EVO860/870/970 and other series.

Way 1: Tighten the SATA port or USB cable

If the SATA port or SATA-USB cable connection is loose, you may encounter this data migration function has been interrupted for an unknown reason. To fix it, the easiest way is to reconnect the SSD disk and be sure the connection is tight.

Way 2: Check Disk and Repair Errors

If you suspect this data migration interrupted for unknown reason error is caused by physical errors or bad sectors, try Windows 11 check disk feature.

From GUI interface:

Step 1. Go to File Explorer, right-click the volume having problems and select the Properties.

Step 2. Switch to the Tools tab and click Check under Error checking.


Step 3. If there is no errors on this disk, you might receive the following window. Click Scan drive to continue scanning this disk.


Step 4. If it throws you a window, and shows found error but not fixed, close it. Then click Repair drive in the following window.

Repair Drive

Step 5. It will ask you to schedule the repair process. Click Restart and repair now and start the repairing process.

Restart and Repair Now

From command prompt:

Step 1. Type cmd in the Search box and select the top result. You need to run cmd as an administrator.

Step 2. Type chkdsk /f /r and press Enter to check disk for errors and repair. To check specific volume, such as system partition, you need to add the drive letters, chkdsk c: /f /r, for example.

Chkdsk f r


  • The /f parameter refer to fix errors on the disk. The disk must be locked. If not, it will ask you to schedule this operation at the next system startup.
  • The /r parameter helps to locate bad sectors and recovers data. The /r includes the functionality of /f, with the additional analysis of physical disk errors.

Step 3. If it tells you the current cannot lock, type Y and type Enter to schedule this operation at the next system startup.

Way 3: Turn off Bitlocker

If you cannot fix Samsung Data Migration has been interrupted for an unknown reason with previous two methods, you could turn off Bitlocker device encryption with the following steps.

Step 1. Go to Control Panel > System and Security > BitLocker Drive Encryption.

Step 2. Scroll down to the operating system drive and click Turn off BitLocker link on the right side.

Turn Off Btlocker

Step 3. It will start to decrypt this drive and the Bitlocker will be turned off automatically.

Another Reliable Way to Clone Hard Drive to Samsung SSD

Except for Samsung Data Migration, you still could try powerful SSD cloning software - AOMEI Backupper Professional.

It offers 3 cloning method - “Disk Clone”, “System Clone” and “Partition Clone”. To clone HDD to Samsung SSD, try the “Disk Clone” feature.
It is able to clone large HDD to smaller SSD, such as, Samsung SSD
It is capable of always keeping the high performance of an SSD disk. 
It supports all series of Samsung SSDs including 860/870/970 EVO, 980/990 Pro, T7 Shield, etc. It also supports WD SSD, SanDisk SSD, Intel SSD, etc.

Now download this power SSD cloning software to have a try.

Download Free TrialWin 11/10/8.1/8/7/XP
Secure Download

Step 1. Install and launch this SSD cloning software - AOMEI Backupper Professional. Next, click Clone and then select Disk Clone.

Disk Clone


  • The Professional edition supports cloning both data disks and systems disks (HDD/SSD or MBR/GPT). To clone data disks, the best choice is to pick the free edition.
  • To clone hard drive in Windows Server 2012, 2016, 2019, 2022, etc, try AOMEI Backupper Server edition.

Step 2. Select the Windows system disk and then Samsung SSD as destination disk. Note all the data on the target disk will be deleted. To avoid data loss, please backup files to external hard drive first.

Select Disk

Step 3. On the Operation Summary window, be sure you check SSD Alignment to accelerate the reading and writing speed of Samsung SSD disk. Then click Start Clone to clone HDD to Samsung SSD.

Start Clone

✌ Important: cloned drive not show full capacity

This issue usually happen to clone disk or SSD to a larger one unless you add unused space to all partition or adjust partition size manually with its Edit Partitions feature. It also helps to clone MBR disk to GPT without boot issue and vice versa.

Copy Without Resizing

✌ Important: sector by sector clone or not

As the name suggests, it will clone all sectors on a hard drive, which may eventually cause this operation fail due to enough space. Just leave it unchecked unless you use it to clone Bitlocker encrypted disk. And it takes a longer time.


This article illustrates 3 effective methods for Samsung Data Migration interrupted for unknown reason in Windows 11. It also helps in Windows 10, 8, 7, XP and Vista. Besides, you still can choose to clone hard drive to Samsung 870 EVO or other series with powerful SSD cloning software - AOMEI Backupper Professional.

Ivy · Editor
Ivy is an editor of AOMEI Technology, she covers backup & restore,hard disk & partitions management and cloud files transfer and so on for AOMEI. She is an outgoing girl and enjoys helping people find solutions to their problems. She loves traveling, eating, reading and so on. She usually hangs out with friends at her leisure time.