You may not be able to migrate OS from HDD to SSD due to an unspecific cause. As it will copy the system partition and boot drive together to ensure the target disk can be correctly booted after the work. Migrate OS can clone your system disk to a larger HDD or an SSD without reinstalling or any boot issue. If you want to clone system disks, we recommend you try Migrate OS option. This function is best used to clone data disks. You can clone HDD to HDD, or copy HDD to SSD. You can use the Clone feature of EaseUS Partition Master to clone a partition or an entire disk. Step 4. Click the 'Execute the operation' option and click 'Apply' to start cloning a hard drive to SSD. Step 3. You can select 'Autofit the disk', 'Clone as the source' or 'Edit disk layout' edit your disk layout. Choose the target SSD as your destination and click 'Next' to continue.

Right-click the source disk that you want to copy or clone.

You can even clone a larger HDD to a smaller SSD.

You can use the Clone option of EaseUS Partition Master to clone HDD or SSD. The following are the highly relevant questions about EaseUS Partition Master and its Clone and Migrate OS features. Check the brief answers if you also have any of these problems. Windows 11/10/8/7 100% Secure More Relevant Topics About EaseUS Migrate OS

Easeus clone disk to ssd