Can’t Migrate OS to SSD– Fix It Effectively

When you can’t migrate OS to SSD, you can turn to this article to learn the reasons and how to fix the issue with a powerful third-party tool.


By Tina / Updated on May 12, 2023

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Why I can’t migrate OS to SSD?


“Hi, I’ve been trying to migrate OS to SSD in order to get more space and speed up my computer, but it always fails. At first, I tried to mark it as active, but it still won’t start. Later, I tried to create a system image, but there was no way to successfully move the OS to the SSD either. Even after trying the above steps repeatedly, I still cannot migrate OS to SSD. Any ideas?”

As is well-known, compared with traditional HDD, SSD has advantages including higher stability, faster read and write speed, lower working noise, etc. After using the computer for a while (especially receiving a low disk space warning), some Windows users want to migrate the operating system from HDD to SSD for better performance.


However, they were unable to migrate the OS to the SSD due to the space of system-related data occupied that might be the same size as the target SSD, lack of specific drivers and use of unsuitable migration software, etc. Here, we will introduce you an efficient migration software to solve the problem of can’t migrate OS to SSD.

How to migrate OS to SSD and boot from it successfully

As mentioned above, if the size of the target SSD is similar to the source drive, you need to reduce the capacity of the source drive to complete the migration. If the migration problem is caused by the driver problem, you need to upgrade the current driver. If the migration fails due to inappropriate software, you need to change the software.

If the migration fails due to software reasons, then you can try AOMEI Partition Assistant Professional may be an excellent choice. With its "Migrate OS to SSD" feature, this powerful data migrate tool can easily complete OS migration after a few simple clicks. In addition, it has some other attractive functions:

Besides migrating Windows, its "Disk Clone Wizard" function can clone the entire drive including personal data to another hard drive without reinstalling Windows.
If your Windows cannot boot properly, you can also create a bootable USB for system migration in Windows PE mode. 
After completing the disk migration, its "Wipe Hard Drive" feature also can help you wipe the old hard drive as a data disk if necessary.

Please download the demo version to see how to migrate OS to SSD for free.

Download Demo Win 11/10/8.1/8/7/XP
Secure Download

What to do before migrating OS?

Before migrating the operating system, please make sure that the following important preparations have been completed:

► If this is a desktop, you can install SSD directly with a screwdriver. But if this is a laptop, you must prepare a SATA to USB cable in advance to connect the computer and SSD smoothly.

sata to usb cable

After connecting the computer and SSD, if the SSD is a new hard drive, you need to initialize it first, otherwise it will be marked as “unknown”.
► The partition style of system drive must be same as the target drive, which refers to both of them should be MBR or GPT, so please convert MBR to GPT or GPT to MBR.
► Don't ignore the power problem, because once the computer is powered off, the entire migration process will be forcibly terminated.

How to migrate OS to SSD

When you have completed all preparations, please follow the guidance on how to migrate OS only to SSD below:

Step 1. Install and open AOMEI Partition Assistant Professional. Click "Migrate OS" under the "Clone".

migrate os to ssd

Step 2. Select an unallocated space on the destination SSD and click "Next".

select unallocated space

Step 3. Change the size of the system partition in the ejected window.

change the size

Step 4. Pay attention "Note" which teach you to boot OS after the migration.


Step 5. Click "Apply" and "Proceed" to confirm this operation.

click apply

Boot from the SSD

If you successfully migrate OS to SSD but don’t know how to boot from it, then you should not miss the following contents.

Step 1. Restart the PC, after seeing the Windows logo, repeatedly press F1/F2/F3/F5/Esc to enter the BIOS setup.

Step 2. Choose the “Change boot order” option to set the SSD as the boot drive.

change boot order

Step 3. Press "F10" to save the new setting.


Can’t migrate OS to SSD and don’t know the reasons? In this post, we have shared the answer and provide a magic migration software AOMEI Partition Assistant Professional to migrate OS to SSD in Windows 10 or 11 without any issues. If you’re a Windows Server user who are also confused  by this problem, you can try the Server Version. And if you’re a group from a company, you can turn to the Unlimited Version.

Tina · Staff Editor
Tina is an English editor of AOMEI Technology. She has a positive attitude and full of energy. On her work, she always keeps thinking to figure out the solutions for users' problems, and writes the answers so that can help someone. In her daily life, she likes to sing, watch TV and sleep. She always being grateful and happy to all the things happened and all the people encountered.