How to Migrate OS to SSD with AOMEI Partition Assistant [without Reinstallation]

July 28, 2022

Here comes an ultimate guide to migrating Windows 11/10/8/7/Vista/XP to HDD or SSD with AOMEI Partition Assistant, which allows you to migrate OS to SSD without reinstallation.

Brief introduction of SSD & HDD

Before you migrate OS to SSD or HDD, it is necessary to have a basic understanding of SSD and HDD.

HDD - Hard Disk Drive: It is the most basic computer storage device, used to store data. Usually, the local disk containing C, D, and F drives in the computer are all hard disk drives. The capacity of the common disk can be 80G, 160G, 750G, 1TB, or 2TB…. Divided by the volume, there are PATA, SATA, and SCSI…. Among those, PATA is with a large capacity but a low price, so it is suitable for home use. SCSI has a comparatively small capacity and is expensive, but it is with good performance and higher stability, so it is usually applied in a high-tech field.

SSD - Solid State Drive: A kind of hard disk which is made of a solid-state electronic storage chip and consists of the control unit (flash chip) and a storage unit (DRAM - Dynamic Random Access Memory chip). It is the same as a common hard disk in many aspects, like definition, the stipulation of interface, function, usage, appearance, and size. But it runs faster than HDD in reading and writing speed. It is widely used in the military, IT industry, aviation, and many other fields.

Benefits of migrating OS to SSD

If you move Windows to SSD, you can experience faster processing speed in reading and writing, get decreased boot time, and you can boot your computer much faster, avoid the risk of data loss caused by shaking the knocking the drive unintentionally, and enjoy relatively quiet working environment. Or when your current hard drive is almost full, you can move OS to a larger drive. All in all, it is easy to get the motivation to perform OS migration.

How to migrate OS from HDD to SSD easily and safely without reinstallation

Then, how to migrate only OS to SSD or HDD successfully? You can employ AOMEI Partition Assistant Professional, which brings a function named "Migrate OS to SSD", specially designed for users who want to quickly move system to HDD or SSD but don’t want to reinstall OS. It also supports migrating OS from MBR/GPT to MBR/GPT. What's more, the hot clone technique allows users to run OS during the OS migration.

Now, please download the Demo version to see how it works:

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

Step 1. Connect the SSD to your computer and ensure it can be detected; install and launch AOMEI Partition Assistant Professional. Then, click "Migrate OS to SSD".

Migrate OS to SSD

Step 2. Choose an unallocated space on your SSD as the target location. If there is no unallocated space, you can check “I want to delete all partitions on the disk 2 to migrate system to the disk” and then click "Next".

Select Disk Space

Step 3. In this window, you could resize partition and modify other information (including location, and drive letter) of the partition on new disk, of course, you can also keep default settings.

Resize Partition

Step 4. A note about how to boot OS from SSD or HDD will show up, keep it in mind and click "Finish" to continue.


Step 5. You'll be back to the main interface where you can preview the result of operation. To commit it, click “Apply” --> “Proceed”  and the migration will begin.


Tips: In some cases, you will see a pop-up message about entering the Restart Mode. Choose one mode to continue the migration (Windows PE mode is recommended).

Restart Mode

After you clone OS to SSD disk, to successfully boot from it, you must change the boot disk to an SSD. Please restart your computer, enter the BIOS setup, change the boot order, set the SSD as the first boot device, and boot the computer from there.

Change Boot Order

● Before transferring OS from MBR to GPT disk, please confirm that your motherboard supports EFI/UEFI boot.
● To clone all partitions (hidden partitions included) to another hard drive, you can use Disk Clone Wizard.
● After the OS successfully boot from the SSD, you can wipe the HDD to use it as a data disk.