By Bryce / Last Updated October 31, 2020

How to upgrade system HDD to SSD easily?

“Recently, my HP computer with Windows 10 installed is booting up and running slowly. Thus, I intend to replace the system hard disk drive with an SSD. But I don’t want to make a fresh install of Windows 10 as it is a little bit complicated for me. So how can I upgrade my system disk to SSD without Windows reinstallation? Is there any advice?”

Clone system disk to SSD instead of Windows reinstallation

Compared with HDD, SSD owns many advantages: faster data access, higher reliability, lower power usage, etc. The outcoming of PCIe NVMe SSD enlarge the performance gap between SSD and HDD further. It’s reasonable to upgrade the old HDD to SSD for better computer performance.

Since you are unwilling to reinstall Windows OS on the SSD, you can move the Windows 10 operating system through disk cloning.

The step-by-step guide on duplicating system disk to SSD

When comes to copying current OS disk to SSD, a disk copy tool – AOMEI Partition Assistant Professional is highly recommended as its highlights listed below:

✍Bootable clone: If a partition related to OS is not copied to new SSD, you won’t be boot Windows from the SSD. This cloning tool can clone all partitions including hidden partitions, ensuring that the cloned SSD bootable.
✍Considerate: It is common that the capacity of the new SSD is smaller than the size of the current system HDD. This cloning tool supports cloning to smaller SSD as it can clone only used space on the current disk.
✍4K alignment: It can make 4K alignment for SSD to improve performance during cloning OS disk to SSD.

Now, have a look at how to copy your system hard drive to SSD via it.


  • The capacity of SSD can be smaller than the capacity of the original disk but should be larger than or equal to the used space on source disk;

  • Backup necessary data if there are files on the SSD, as this operation will erase all data on the destination disk.

Step 1. Connect SSD to your computer, install and run the software. Go to All Tools and Disk Clone Wizard.

Clone System Disk

Step 2. In the pop-up window, choose Clone Disk Quickly.

Clone System Disk Quickly

PS.: If you need to clone a hard drive with bad sectors and the capacity of the target SSD is not smaller than the source disk, please choose Sector-by-Sector Clone.

Step 3. Locate the system disk and choose it as the source disk.

Select Source Disk Clone System Disk Full

Step 4. Choose the SSD as the destination disk; tick the box before Optimize the performance of SSD….to make SSD partition alignment.

Select Target Disk Clone System Disk Quick

PS.: If there are data saved on SSD, you'll be prompted to delete all partitions and wipe all data on SSD.

Step 5. In this window, you are allowed to adjust partition size on the destination SSD.

Clone System Disk Without Resizing

PS.: If you clone HDD to smaller SSD, the option of Clone without resizing partitions will be not working.

Then, a Note about how to boot OS from the destination disk will pop up. Read and keep it in mind.


Step 6. In the main interface, to perform cloning operation, click Apply and Proceed.

Apply Proceed Clone System Disk Quick


  • A reboot is necessary for this operation as it involves the system.

  • If the storage space of the SSD is too small to hold all data on your current hard drive, it’s not a bad choice to clone OS related partitions only to SSD via Migrate OS to SSD function of AOMEI Partition Assistant Professional.

  • AOMEI Partition Assistant Professional is compatible with Windows 10/8/7, XP and Vista. For Windows Server users, please use AOMEI Partition Assistant Server.


All in all, whether you want to upgrade system disk to SSD or replace it with a bigger one without Windows and applications reinstallation, it’s a nice choice to clone it. Obviously, AOMEI Partition Assistant Professional can help you to complete the operation effectively and easily. What’ more, it is featured various other functions, such as copying data partition to a new hard drive, recover lost partition, convert dynamic disk into basic without data loss, etc.