Clone SD Card to Larger Card Securely & Easily (Free)

Posted by @Teresa

September 11, 2018

Looking for free cloning software to clone Raspberry Pi SD card or Android to larger card in Windows? This article introduces the best one and detailed steps of cloning SD card are followed by.

About the SD card you’re about to clone

Before you try to clone an SD card, you may want to understand SD card briefly. SD card, the abbreviation of Secure Digital card, is a memory card that mostly used in portable devices through SD card slot or reader, such as digital cameras, music players, Android phones, tablets, personal computers, etc. With no moving parts inside, data stored on SD card has less possibility to lose when powered off. Four kinds of SD card are served in three different form factors, SDSC, SDHC, SDXC, and SDIO. They differ from speed, security, capacity and compatibility aspects.

Raspberry Pi model requires different sizes of SD card in different versions. The common SD card manufacturers are popular as well, actually. The mainstream SD card brands would be SanDisk microSDXC, Polaroid SDXC, Silicon Power (SP) Micro SDXC, Samsung SD Card, Transcend SDXC, Lexar SDHC, and so on. The capacity of SD card increases to meet user’s daily use nowadays. That’s why some users would like to clone SD card to another SD card.

SanDisk SD card

Why clone SD card to larger card?

In general, several common reasons account for the behavior of cloning SD card in Windows. See if you’re in one of those situations.

  • Fix low disk space warning. You can extend partition size when there is low disk space on a certain volume. However, you have to upgrade SD card to a larger card since the only partition of SD card almost takes up the whole space (Windows will only recognize the first primary partition of removable devices by default). It is high time to change SD card to a larger one when you see a red volume bar in Windows File Explorer.

  • Protect stored data on SD card. Some users clone SD card in Android may not because it’s low capacity. For example, it is necessary to copy SD card when it is failing, or been infected by virus. Copying is a way to save valuable data. In addition, cloning a function SD card can be considered as backup. Some users copy SD card to PC for backup, some copy to another SD card instead.

  • As covered, Paspberry Pi model requires different SD cards. You may need to clone Raspberry Pi SD card to larger card after changing the model.

Besides, data transferring between SD cards is also a factor that leads to SD card cloning. Nevertheless, what counts next is to figure out how to perform SD card cloning in Windows securely and efficiently.

Benefit from the best free SD card cloning software

AOMEI Backupper Standard is free yet professional SD card cloning software that earns its own reputation due to reliable and easy-to-use features. It allows you to copy all partitions to target SD card if you created more than one partition in the previous operating system like Linux.

AOMEI Backupper, with built-in technology, will adjust partition size to fit the entire target SD card if you clone from smaller SD card to larger. As a result, all space will be usable after cloning, and no need for extra extending. On the other hand, the software provides Sector-by-sector clone which makes exact copy of the source SD card, no matter the sector is used or not.

By default, AOMEI Backupper only clone used part to target disk, which makes cloning larger drive to smaller drive possible. You can clone SD card to smaller size with this feature if the need ever arises. Now, let’s get to know how to copy SD card in simple steps.

Detailed steps on how to clone SD card to SD card securely


  • Two SD card Readers (only one Reader is enough if your PC has one SD card slot).

  • A Windows-based machine.

  • SD card cloning software (free download and install).

  • Sufficient battery electricity for your computer.

Note: the target SD card will be overwritten after cloning. Make sure you’ve choose the correct one in the steps.

1. Connect both SD cards to your PC and make sure they can be detected properly. Open AOMEI Backupper Standard. Click Clone and then Disk Clone.

Disk Clone

2. Select the source SD card.

Choose the source SD card

3. Select the target SD card (larger card).

Choose the larger SD card

4. Here is the Operation Summary page. Click Edition partitions on the destination disk and then choose Fit all partitions to entire disk option.

Fit all partitions to entire disk

5. Confirm your operation and click Start Clone. Wait for the process completes.

Start Clone

6. Disconnect both SD cards after cloning. Connect the new cloned SD card to your device if any.


  • Ticking Sector by sector clone option will make partition editing unavailable.

  • To clone a specific partition only, please choose Partition Clone in the first step.

  • You’re allowed to clone SD card to USB flash drive through above steps.

If you cannot connect two SD cards to your computer simultaneously, it is suggested to do backup & restore operation. Firstly, connect the old SD card and create a backup with AOMEI Backupper. You can backup SD card to computer directly. Secondly, disconnect the first card and connect the larger SD card to your PC. Finally, perform image restore to the larger SD card, and done.


AOMEI Backupper Standard makes it easier to clone SD card to larger SD card. Within only several clicks, all data on the old SD card will be transferred to target card without losing anything. AOMEI Backupper is also powerful backup solution and disaster recovery tool for Windows. It is suggested to keep it installed to protect your computer. You can also create a bootable rescue media just in case.