By Lily / Last update May 10, 2023

Why Clone Old Hard Drive to New?

Every old hard drive comes from new hard drive. We store OS, software, programs, files, videos, music and  the like on our hard drive. As time goes by, the hard drive stores too much data and is overwhelmed. Hardware on the hard drive will fail gradually, so all contents on the old hard drive has the risk to lose. You can clone this hard drive to a new one, SSD or HDD, depending on your budget.

Except for replacing failing hard drive, you may want to clone old disk to new to upgrade disk capacity. That is, clone smaller disk to bigger one. Further, to get better experience, many users tend to clone boot drive to SSD and keep the old hard drive as storage. That arrangement makes full use of the advantages of each type of storages.

Some users try to clone laptop hard drive to new instead of buying a new laptop. No matter what factor leads you to the way of cloning old hard drive, you need to think how to perform the cloning. Now, let’s get to know what kind of cloning tool you’ll need and how to operate.

Software to Clone Old Hard Drive to New Disk

Given that you have purchased an SSD that is smaller than the current old hard drive. When you want to clone everything from the old hard drive to the SSD, you may get this “Target disk is too small for this operation” error using some cloning software. Actually, this is not a technical issue. This may be simply because the cloning software you use doesn’t support clone larger hard drive to smaller one.

Luckily, specialized cloning software AOMEI Backupper Professional can deal with the issue perfectly.

  • It provides two cloning methods, sector by sector clone and intelligent clone. You are able to clone old hard drive to a smaller SSD in laptop/desktop with secure boot using "intelligent clone" (default method) as long as the SSD is no smaller than the used part of the old hard drive.
  • It is able to perform "Live Disk Cloning" to clone one disk to another without breaking off the running operating system and programs. That is to say, you can clone old hard drive in Windows Vista, 7, 8, 10, 11 to a smaller SSD in the process of working and studying.

How to Clone Your Old Hard Drive to Your SSD Step by Step

1. Install SSD to your machine. You can connect it via SATA-to-USB cable. Download, install and start AOMEI Backupper. Click Clone and then Disk Clone.

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Disk Clone

2. Select the current old hard drive as the source disk.

Select Old Disk

3. Select the smaller SSD as the target disk.

Select SSD Disk

4. Check SSD Alignment box since the destination disk is an SSD. The default cloning method is intelligent clone, meaning cloning only used part on the source disk. Click Start Clone.

Start Clone

5. Shut down the computer on completion. Replace your old hard drive with the cloned new SSD. You may need screwdriver in the step of uninstalling disk. Boot off PC from the new SSD. If you keep both installed, you need to change boot priority to the SSD in BIOS.

Tip: To clone old hard drive to new computer that has different hardware, it is suggested to create a backup image for the old hard drive and then perform dissimilar hardware restore on the new computer.

Further reading

You may receive this information if you clone from GPT disk to MBR disk and the GPT disk has more than 3 partitions:

Note: The source disk contains over 3 partitions. Disk Clone only supports to copy 3 partitions at most from GPT disk to MBR disk. You could use Partition Clone to copy the remaining partitions to this destination disk.”

As a suggestion, you can merge partitions without losing data or reduce partition number to fit the MBR partition style to solve this issue.


In general, it is quite easy to clone old hard drive to a smaller SSD with the help of AOMEI Backupper. This cloning software is also a perfect backup solution, for example, scheduled backup to external hard drive. AOMEI Backupper is good alternative to File History in Windows 8, 8.1, 10, 11 and Backup and Restore in Windows 7 as well. This all-around tool can be pretty helpful in building your PC backup strategy.