By Teresa / Last Updated December 14, 2020

Why migrate OS to smaller SSD?

As is well-known, SSD (Solid-state Drive) has significant advantages than traditional hard drive. It becomes popular among computer users and has the trend of replacing HDD. SSD store and access data with non-volatile memory chips which enables you to retain information even without power.

However, most SSDs hold smaller capacity than HDDs, that’s why hard drive always be used as secondary storage device after migration. Therefore, to move OS to smaller becomes one of the most important questions that people asked in all kinds of forums.

How to transfer OS to smaller SSD?

To migrate operating system, you can complete it with the help of Windows backup utility. Use Create a system image feature in Windows 7 and Windows 10 to backup system. If you are running Windows 8, use Windows 7 File Recovery feature. Then restore the system image to SSD. Nevertheless, chances are that you may encounter restore failure due to unknown reasons. To learn more, see migrate OS from one SSD to another.

Create a system image Windows 10

Alternative option is to use professional OS migration software - AOMEI Backupper Professional to clone OS to smaller SSD. This software is for Windows 10/8/7/XP/Vista. The feature System Clone supports to clone system partition as well as system reserved partition to smaller SSD. You are allowed to clone only used part to SSD to save disk space. Download it to have a try.

Migrating OS to smaller SSD with AOMEI Backupper

1. Connect your smaller SSD to computer via SATA to USB cable or internal SATA case. Install and launch AOMEI Backupper Professional. Choose System Clone under Clone tab.

System Clone

2. Choose the smaller SSD as the Destination Partition. The system and system related partitions are selected by default.

Choose Destination Partition

3. Here comes the Operation Summary. Check SSD Alignment box and then click Start Clone.

System Clone SSD Alignment Checked

Tips: Sector by sector clone means clone every part both used and unused part to SSD. You can ignore this option in this situation.

You need to either remove previous hard drive or change boot settings in BIOS to let Windows OS boot from SSD. Just within 3 simple steps, you are able to migrate OS to smaller SSD successfully. Actually, if your SSD is large enough to contain the used part of HDD, you can clone entire disk to SSD with the same software.

In addition, this powerful backup utility can help you backup hard drive without booting Windows. Other helpful features like create bootable media, system backup, disk backup, system restore, universal restore, backup data from corrupted hard drive, and so on are embedded in this software.