By Bryce / Last Updated October 23, 2020

Can I clone my OS to SSD for free?

“I bought a SanDisk SSD drive for my PC and want to replace the pre-reinstalled HDD with it. I want to clone Windows to SSD instead of making a fresh install. Is there any cloning software that can help me to clone to SSD for free from old HDD?”

Why clone to SSD?

When you are using traditional hard disk drive, you clone HDD to SSD because you need to enjoy the merits of SSD, like noiselessness, faster read/writing speed, and better reliability. When you have been used SSD, usually, you copy old SSD to new SSD for large capacity. Since SSDs have different transfer rates, you may clone to new SSD for higher transfer speed.

After HDD to SSD/ SSD to SSD copy, you can get a duplicate of all the content (including system files) on your original disk. Then, how can you do it?

Get disk copy software for cloning to SSD for free!

To transfer all data, including Windows OS to SSD without reinstallation, you can use a great data migration tool, AOMEI Partition Assistant Standard to clone disk to SSD for free. It can clone only used space. That is to say, you can use it to clone disk to smaller SSD. If you don’t need to move all things from source disk to SSD while wanting to keep Windows OS without reinstalling, you can use its Migrate OS to SSD function to clone only OS related partitions to SSD.

Now, you can free download it and refer to the following text about how to use it clone disk to SSD in Windows 10/8.1/8/7, XP, and Vista (64bit and 32bit).

Download Freeware Win 10/8.1/8/7/XP
Secure Download

Note: For cloning data disk to SSD, AOMEI Partition Assistant Standard supports MBR to MBR/GPT or GPT to MBR/GTP. For cloning system disk to SSD, it supports only MBR to MBR. If you want to clone MBR system disk to GPT or GPT system disk to MBR/GPT, you need to upgrade to Professional edition.

Few steps to clone to SSD for free via AOMEI Partition Assistant

Firstly, connect the new SSD to your PC and make sure it can be detected. If your PC has no extra disk bay for it, you need a USB-to-SATA cable. What you should pay attention to is that the capacity of the new SSD should not smaller than the used space of your current disk. Then, you can follow the step-by-step guide on HDD/SSD to new SSD cloning.

Step 1. Install and run the SSD cloning software. Click All Tools and choose Disk Clone Wizard.

Step 2. In this window, you need to choose a copying method to clone to SSD. Here Clone Disk Quickly is selected.

▪ Clone Disk Quickly only copies the used space of the source disk to SSD. The destination SSD should be larger than the used space of the source disk and can smaller than the source disk.
▪ Sector-by-Sector Clone copies all sectors of the source disk to SSD no matter it is used or not. The target SSD should be larger than the source HDD or SSD.

Step 3. Select the disk whose all data including OS needs to be migrated as the source disk.

Step 4. Choose the new SSD as your destination disk. Tick the box before Optimize the performance of SSD to make SSD 4K alignment.

Step 5. Here you can adjust the partition size on the destination disk. When cloning to smaller disk, the first option will be greyed out.

Clone without resizing partitions: Keep the size of source partitions.
Fit partitions to entire disk: Adjust the partition size automatically to fit the whole target disk.
Edit partitions on this disk: Change partition size manually on destination disk as you like.

Step 6. You’ll get a note on how to boot OS from the destination disk after cloning. Keep it in mind and click Finish.

Step 7. In the home interface, click Apply and Proceed to commit the operation.


  • After booting from cloned SSD successfully, you can wipe the original disk to reclaim disk space.

  • Apart from cloning the entire disk to SSD, migrating OS drive only to SSD, this software allows you to clone a specific data partition to SSD as well.

  • After cloning OS disk to SSD, to boot from the cloned SSD, you can change boot order or replace the old disk with the cloned SSD directly.