By Teresa / Last Updated October 28, 2020

Why clone SSD to (larger)SSD in Windows?

Subject to price, you may choose to upgrade your HDD to faster SSD with small capacity. However, as time goes by, more and more applications and programs have permissions to write to the system drive (C:) which usually installed on SSD; your current SSD is almost running out of space, resulting in low running speed.

In such circumstances, the best solution is to replace old smaller SSD with a new larger SSD. To save the process of Windows OS and apps reinstallation, it’s recommended to clone old SSD to new larger one.

SSD to SSD clone software free download

Usually, after purchasing an SSD, a dedicated cloning tool for that brand of SSD will be received at the same time. For instance, to clone SSD to Samsung SSD, we can use Samsung Data Migration (SDM) to complete the cloning task. For detailed steps of using SDM, please refer to clone hard drive to Samsung SSD.

These kinds of dedicated SSD to SSD cloning software often work well but they have a common problem: only work for the SSDs they come with. As a result, to make sure we are able to clone SSD to another SSD without taking manufacturers into consideration, we might as well seek help from third-party SSD to SSD cloning software.

AOMEI Partition Assistant Standard is a free and reliable hard drive partition manager that allows us to perform SSD to SSD clone on Windows 10, 7, 8, XP and Vista (32-bit and 64-bit). No matter to clone smaller SSD to larger SSD or clone larger SSD to smaller SSD, it won't let us down. Moreover, its "Migrate OS to SSD" feature can clone only OS from one SSD to another instead of copying the entire disk. Now download this free tool to learn how to clone SSD to SSD drive.

Download Freeware Win 10/8.1/8/7/XP
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Stepwise guide: clone smaller SSD to larger SSD

In the first place, install destination SSD on the computer. If on a laptop, we need to clone SSD to SSD via USB cable since most laptops have only one disk bay. Install and run AOMEI Partition Assistant then.

IMPORTANCE: please back up any required data on the destination SSD drive because everything will be deleted during the cloning process.

Step 1. At the main interface, click on "Disk Clone Wizard" in the left "All Tools".


Step 2. In pop-up window, select SSD clone method, Clone Disk Quickly or Sector-by-sector Clone.

Copy Methods

Clone Disk Quickly: this method will clone used part on source SSD only, and the cloning process takes up less time. It allows for larger SSD to smaller SSD clone.
Sector-by-sector Clone: it will clone every sector on source SSD including accidently formatted sections. Meanwhile, more time required.

Step 3. Select the smaller SSD as source disk.

Source Disk

Step 4. Select the larger SSD as target disk. Be sure to check “Optimize the performance of SSD” to align SSD partition automatically.

Target One

Step 5. There are three options to edit partitions on target SSD, select one of them based on your needs.


Step 6. Then it will provide instruction on how to boot from destination SSD. After that, preview the virtual result. Click “Apply” > “Proceed” to execute pending operations.

The process will be completed in PreOS mode and the cloning time depends on how much data on source SSD. After cloning progress completed, we need to either remove previous SSD or change boot priority in BIOS to boot computer from target SSD.

Bonus tips:
①If you cannot boot from the cloned SSD, you can refer to this article: Cloned Hard Drive to SSD not Boot.
②When everything goes well on the new SSD, you can format or secure erase the old SSD for re-use.

Benefit: Automatic Partition Alignment during SSD to SSD Clone

During SSD cloning, SSD partition 4K alignment is not an affair that we can ignore. SSD adopts the smallest 4K sector in the file system to save data. If the smallest 4K allocation units are not always aligned in SSD, the performance of SSD could be affected. For instance, you may find small files take up large disk space. After checking "Optimize the performance of SSD" option in the above Step 4, AOMEI Partition Assistant will automatically align SSD partition to 4K sector.

Check if the partitions are well-aligned using Diskpart in CMD. Open Command Prompt and then type these commands in order: diskpart > list disk >select disk n(n is the SSD) > list partition. Check the “Offset” column. If it is the multiple of 1024KB, the partition has been aligned well. To learn more about SSD partition alignment, please visit Diskpart: SSD alignment Windows 10.

The Verdict

AOMEI Partition Assistant Standard is free yet powerful SSD to SSD clone software. It also ensures a successful and secure boot after clone. But for system disk, it supports only cloning MBR to MBR; if you need to clone GPT to GPT/MBR or MBR to GPT, you can upgrade it to AOMEI Partition Assistant Professional, which can offers more advanced features such as migrate OS from GPT disk to SSD without reinstalling, extend system drive without reboot, convert disk between MBR and GPT without deleting partitions, etc.


Question: What is SSD cloning?

Answer: SSD cloning is to create a complete 1:1 copy of the target solid-state drive, not just the saved files. Each bit of information will be transferred to destination location.

Question: Does Samsung SSD come with cloning software?

Answer: Samsung SSD has the Samsung Data Migration software to clone SSD drive. But it only supports cloning system disk to Samsung SSD drive.

Question: What is the best SSD cloning software?

Answer: AOMEI Partition Assistant Standard software could be the best SSD cloning software. It can clone SSD to another successfully and ensure a secure boot after clone.

Question: How do I transfer Windows 10 from SSD to SSD?

Answer: The simplest solution is to use a reliable OS migration software, which can transfer the Windows 10 partition from SSD to SSD and allows you to boot from the cloned SSD.

Question:Does cloning an SSD drive make it bootable?

Answer: Theoretically, a successful SSD clone can make the destination disk bootable if the system disk partition style and the boot mode are compatible.

Question: How do I clone a large SSD to a smaller SSD?

Answer: To clone a larger SSD to a smaller SSD, you can choose to clone only used sectors from the source SSD to target SSD.

Question: Why is my SSD capacity smaller after cloning?

Answer: It happens when you clone to a larger SSD. Most cloning programs clone the original partition size to the destination disk by default. So the exceeding space will leave as unallocated space in Disk Management and invisible in File Explorer.