→ The OEM Partition created by the computer manufacturer when shipped from the factory
will not be cloned.
However, it will be automatically cloned if the computer manufacturer is Samsung and
SRS (Samsung Recovery Solution) 5, SRS 6, or SRS 7 has been installed. (Versions lower
than SRS 5 are not supported.)
2. Cloning failure
Change to the “No virtual memory paging file”
→ Go to Control Panel > System and Security > System > Advanced system settings. Open the
Advanced tab, click Settings under Performance, open the Advanced tab in the
Performance Options dialog, and then click [Change] under Virtual memory. Deselect the
"Automatically manage paging file size for all drives" checkbox, select the "No paging file"
radio button, click [OK], and then restart the computer.
2. Check the drive, check the system, defragment the drive, and then optimize the drive.
→ To learn how to check the drive and system, please refer to “FAQ. 1-2-4.”
→ To learn how to defragment and optimize the drive, please refer to the following:
* How to defragment and optimize the drive
a-1. Type "Defragment and Optimize Drives" in the search bar and press Enter.
a-2. Click This PC, right-click Local Disk (C:), select Properties, open the Tools tab, and then
click [Optimize] under Optimize and defragment drive.
a-3. Type “dfrgui” or “dfrgui.exe” in the Run box and press Enter.
b. Select the volume on which Windows is installed, click [Analyze], and then click [Close].
c. Select the volume on which Windows is installed, click [Optimize], and then click [Close].
Disable system restore point files.
→ Go to Control Panel > System and
Security > System, select the System Protection tab,
click [Configure], select the "Disable system protection" radio button, and then click
4. Restart the computer and extend or shrink the C: drive volume.
→ Type “diskmgmt.msc” in the Run box and press Enter to open Disk Management. Then,
shrink or extend the C: drive volume on which Windows is installed.
→ Restart the computer, connect the Target Drive, and then clone the Source Drive to it.
5. Turn off BitLocker, a Windows security program.
→ Check whether BitLocker is turned on in the following cases:
→ The process is stuck at 0%.
→ The “Data migration has stopped for unknown reasons” error message appears.
* BitLocker is turned on automatically in the following cases:
a. The operating system is Windows 7, Windows 8, Windows 8.1, or Windows 10.
(It may not be available on some Windows editions.)
b. TPM is enabled (i.e., the TPM option in the BIOS is on).
c. UEFI Secure Boot is enabled (i.e., the TPM option in the BIOS is on).
d. You have signed in with a Microsoft account.
* How to turn off BitLocker
Go to Control Panel > System and Security > BitLocker Drive Encryption, and click Turn off BitLocker.