By Bryce / Last Updated December 28, 2018


“Recently, my HP computer with Windows 7 installed is booting up and running slowly. Thus, I intend to replace the system disk with an SSD. But I have never made a fresh install of Windows and don’t know do it? Is there any advice?”

Why not clone system disk?

Compared with HDD, SSD owns many advantages: faster data access, higher reliability and lower power usage etc. It is a reasonable decision to upgrade your current system disk to SSD. Since you are unwilling to reinstall Windows OS, you can clone the system disk to SSD to move the operating system and all applications from the original disk to SSD.

How to clone system disk to SSD?

When comes to copying current Windows disk to SSD, a disk copy tool – AOMEI Partition Assistant Professional is highly recommended, if your SSD doesn’t come along with data migration software. AOMEI Partition Assistant Professional can copy system /data disk to SSD or HDD of different sizes in Windows 10/8.1/8/7, XP and Vista. Let’s see how it clones system disk in Windows 7 to SSD.

What you should know:

  • The capacity of SSD can be smaller than the capacity of 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 destination disk.

  • If you clone MBR system disk to GPT SSD or GPT to MBR, it is necessary to change boot mode after cloning, so that you can boot from cloned SSD successfully.

Step 1. Connect SSD to your computer, install and run AOMEI Partition Assistant Professional. Click on Disk Copy Wizard on the Wizards menu. In the pop-up window, choose Disk Copy Quickly.

Clone System Disk to SSD

Note: If you want to copy all sectors including unused sectors from current system disk to SSD and SSD’s size is not smaller than current disk, chose Sector-by-sector Copy.

Step 2. Locate the system hard drive and choose it as the source disk.

System Disk Is Selected

Step 3. Choose the SSD as the destination disk; tick the box before Optimize the performance of SSD….to make SSD partition alignment.

Target Disk

Step 4. In this window, you are allowed to adjust partition size on the destination SSD.


PS.: If you clone disk to smaller one, the option of Copy 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 5. In the main interface, to perform cloning operation, click Apply and Proceed.



  • A reboot is necessary for cloning system disk to SSD via this disk cloning software.

  • 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 drive only to SSD.

  • AOMEI Partition Assistant Professional is suitable for Windows PC users, if you are Windows Server users; please employ AOMEI Partition Assistant Server.

All in all, whether you want to upgrade system disk to SSD or replace it with a bigger one, it’s a nice choice to clone system disk. Obviously, AOMEI Partition Assistant Professional can help you to complete such task 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 and so on.