Best Way to Clone SD Card to Smaller Card - Easy & Free

Need to clone SD card to smaller card? The best free disk cloning software - AOMEI Backupper can be your excellent helper.


By Jonna Updated on March 18, 2024

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User Case: Cloning SD Card onto a Smaller One


Hello, I have a 256GB micro SD card, and I've bought a new one with 128GB. I want to transfer the data on the old SD card to the new one. Is this possible? I believe that there is a way to do that properly but I couldn't find any information.

Cloning SD card to smaller card can be a lifesaver, especially when dealing with limited storage space or upgrading to a more compact device. In this guide, we'll explore the benefits and powerful software solution to effortlessly clone your SD card to a smaller one, ensuring a seamless transition without compromising data integrity or performance.

Clone SD Card to Smaller Card

Benefits of Cloning SD Card to Smaller Card

Cloning SD card to smaller size offers several advantages, including:

  • Data preservation: Cloning ensures that all your files, applications, and settings are transferred intact to the smaller card, eliminating the risk of data loss or corruption.
  • Convenience: Cloning simplifies the migration process, saving you time and effort compared to manual file transfer methods.
  • Space optimization: Transitioning to a smaller SD card allows you to maximize storage space while maintaining access to your essential data.
  • Portability: Smaller SD cards are more portable and compatible with a wide range of devices, making them ideal for on-the-go usage.

Powerful Cloning Software to Clone SD Card to Smaller/Larger Card

When it comes to selecting the right software for cloning your SD card, AOMEI Backupper stands out as a reliable and user-friendly choice. Here are some key features that make it the go-to option for cloning tasks:

🔳 Intuitive interface: AOMEI Backupper boasts a user-friendly interface that simplifies the cloning process, making it accessible to users of all skill levels.
🔳 Versatile cloning options: It offers Disk Clone and Partition Clone to copy the whole SD card or selectively clone SD card with multiple partitions.
🔳 Intelligent clone: You can clone SD card to smaller card by only copying the used sectors or perform a sector-by-sector clone, including unused sectors, to clone SD card to another SD card with equal or larger size.
🔳 Universal compatibility: This tool supports a wide range of storage devices, including all brands of SD cards, SSDs, and HDDs, ensuring compatibility with your hardware setup.

How to Clone SD Card to Smaller Card

Cloning your SD card to a smaller one with AOMEI Backupper is a straightforward process. Here's a step-by-step guide on how to clone Raspberry Pi SD card to smaller card:

Preparation tips:
Connect your both two SD card to the computer, and make sure they are detectable.
Make sure the used space of the larger SD card is less than or equal to smaller card. If not, please free up card space before cloning to the SD card in a smaller size.
Backup the SD card, which you want to clone to, if there are important files. This is because the cloning process will erase all data on the destination card.

Step 1. Download and Install AOMEI Backupper on your computer.Then, launch this cloning software.

Download Freeware Win 11/10/8.1/8/7/XP
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Step 2. Navigate to the Clone tab, and choose the Disk Clone option.

Disk Clone

Note: The free version of AOMEI Backupper only supports you to clone data disk. If you want to clone OS SD card to a smaller card, you can upgrade to the Professional or higher version, which also provides you with System Clone for copying only OS partitions easily.

Step 3. Choose your current Raspberry Pi SD card as the source disk and the smaller SD card as the destination disk.

Select Source Disk

Step 4. Initiate the cloning process by tapping on Start Clone to let Raspberry Pi clone SD card to smaller one easily.

Strat Clone

Note: The "Sector by Sector Clone" option will copy all sectors of your SD card to another one, so please don't check this feature if the target disk is smaller. It is only suitable for cloning SD card to larger card or cloning hard drive to larger drive.

FAQs about SD Card Cloning

#1. Can I clone an SD card to a smaller one?

Yes, it's possible to clone an SD card to a smaller one, but you need to ensure that the data size on the original card fits within the capacity of the smaller card.

#2. Can I clone a bootable SD card to a smaller one?

Yes, you can clone a bootable SD card to a smaller one, but make sure the smaller card has enough space for the bootable partition and all the necessary files.

#3. Can I clone an SD card with multiple partitions to a smaller one?

Yes, you can clone an SD card with multiple partitions to a smaller one, but you may need to resize the partitions or select specific partitions to clone if the smaller card has limited space.

#4. How long does it take to clone an SD card to a smaller one?

The time it takes to clone depends on various factors such as the size of the data, the speed of the SD cards, and the cloning software used. It could take anywhere from a few minutes to several hours.


Cloning your SD card to smaller card offers a convenient and efficient way to transition to a more compact storage solution without sacrificing your valuable data. With powerful software solutions like AOMEI Backupper, the cloning process becomes a breeze, ensuring a seamless experience for users of all levels. It is also capable of cloning USB, HDDs, SSDs, and other devices.

Besides, this software is a reliable sync tool that can help you transfer files from PC to SD card, USB drive, NAS, network drive, and various locations. Give AOMEI Backup a try and you will be surprised by all its wonderful features!

Jonna · Editor
Jonna joined AOMEI in 2021 and has become a professional in the areas of computer backup and restoration, disk cloning, file synchronization, etc. She maintains a keen eye for the latest technology trends, ensuring that the information provided is always in step with industry developments.