How to Copy File Larger than 4GB to FAT 32 USB Drive/SD Card

Brithny updated on Sep 30, 2019 to Partition Master | How-to Articles

Error: File is too large for the destination file system - FAT32.

Applies to: Resolve "Can't copy large files over 4GB to FAT32 device" issue.

Why Can't I Copy Large Files over 4GB to My USB Drive

"Recently I encountered such a problem. I plugged my new 32 GB USB flash drive into my computer, trying to transfer some files to another computer with it. Files like MP3s, documents, etc. were all transferred quickly.

But when I tried to copy some DVD ISO files and video files, I got the error 'The file is too large for the destination file system'. Then the transfer failed. The biggest file is about 5GB and the file system of my USB is FAT32. Does anyone know how to copy large files over 4GB to USB flash drive?"

If you received the same error message of "The file is too large for the destination file system" and couldn't copy big files to a FAT32 storage device, don't worry. Here is a brief introduction of FAT32 and NTFS: 

  • FAT32: Support to transfer and save single files below 4GB. (The default file system for USB, SD card, etc.)
  • NTFS: Supports to transfer big files over 4GB. (The default file system for HDD, SSD, external hard drive, etc.)

It explains why you can not copy files larger than 4GB files to the FAT32 USB drive, memory card or other external storage devices. It’s easy to resolve this issue. You just need to convert FAT32 to NTFS first and then finish the file transferring process by following below two parts. 

Part 1. Convert FAT32 USB to NTFS without Formatting

Normally, users can use Windows Disk Management or Windows File Explorer to format USB drive or SD card from FAT32 to NTFS. But it will delete all the data on the drive. We don't recommend you to do so.

Then is it possible to convert FAT32 to NTFS without formatting? EaseUS partition software - Partition Master allows you to do this job with simple steps.

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 Windows 10 is supported

Here is the detailed guide:


Step 1: Install and launch EaseUS Partition Master on your computer.

open EaseUS Partition Master

Step 2: Select a FAT32 partition, right-click on it and select "Convert to NTFS". If you need to convert a storage device such as SD card or USB flash drive to NTFS, insert it into your PC first and repeat the previous operation.

convert FAT32 to NTFS

Step 3: Click "OK" on the pop-up dialog box to continue.

convert FAT32 to NTFS

Step 4: Go to the upper left corner, click the "Execute 1 Operation" button and you will see the operation details. Click "Apply" and "Finish" when the process completes.

convert FAT32 to NTFS

After finishing all the steps, you can copy the file larger than 4GB to the USB drive and transfer to the new PC successfully.

Part 2. Transfer Large Files Over 4GB to A New PC via USB

Now you can use the converted USB or SD card to transfer the large files on your PC with below tips:

Step 1. Connect the USB to your source computer.

Step 2. Copy and paste big files over 4GB to the USB drive.

Step 3. Disconnect the USB and plug it to the new PC.

Step 4. Copy these big files from USB, paste and save them to a secure location on the new PC.

Bonus Tip: Transfer Files over 4GB to New PC via Internat (without USB)

If you prefer a more efficient way for transferring files, documents, and even applications to a new PC, automated PC transfer software - EaseUS Todo PCTrans will help. 

It allows you to effectively transfer files to a new computer with ease:

Step 1. Open EaseUS Todo PCTrans on both of your computers. Choose "PC to PC" to go to the next step.

Transfer files from PC to PC - step 1

Step 2. Connect two PCs via the network by entering the password or verification code of the target PC. Besides, make sure you have chosen the right transfer direction and click "Connect" to continue.

The verification code is on the right top of the "PC to PC" main screen on the target computer.

Transfer files from PC to PC - step 2

Step 3. Then, choose "Files" and click "Edit" to select files to transfer.

Transfer files from PC to PC - step 3

Step 4. Select the specific files as you want. What’s more, you can click the Edit icon to customize the storage path for transferred data.

Transfer files from PC to PC - step 1

Step 5. Now, click "Finish" and "Transfer" to begin to transfer files from PC to PC. The size of the file determines the transfer time. Wait patiently.

Transfer files from PC to PC - step 5

To sum up, this page explains why you can't copy files larger than 4GB to a FAT32 device and guides you to resolve the 'file system is too big for target file system" error by converting FAT32 to NTFS without formatting and providing reliable solutions for file transfer. 

If you have other problems, feel free to search on our website or visit our customer support center for help. 


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Frequently Asked Questions

Why Choose EaseUS Partition Master?

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Will the "Migrate OS" feature transfer the Windows system files only or the whole C drive?

To ensure that the migrated system will boot normally, the Migrate OS feature will transfer all the files in the system and the boot partitions. Generally, the boot partition is the C drive so the transfer will include all the files in C.

Does EaseUS Partition Master license apply to multiple computers?

The license of Partition Master Professional and Server editions can be used on 1 computer only, while that for for the Technician and Unlimited editions can be used on multiple machines.

What is the difference between EaseUS Partition Master Trial version and the Free version?

Free is for home users only, with most basic functions available such as partition resize and clone. While trial can help you understand how this product works and test what a full license can do on a business or server OS machine.

Will it cause any data loss after resizing the partition in EaseUS Partition Master?

Generally, it will not cause any data loss or boot issue by resizing a partition. However, in order to protect your data, we suggest that you backup the partition before resizing, in case of any unexpected situations such as power outages, computer hardware failures, etc. You can use EaseUS Todo Backup to backup the partition and its trial version is fully functioned for 30 days.

What should I prepare before resizing the partition?

On the partition that is going to be operated, there might be some files being occupied by other programs. To ensure a successful operation, we suggest that you close all the unnecessary software before resizing that partition. Otherwise, EaseUS Partition Master will detect the partition being locked by the other software and require a reboot to resize the partition under boot mode.

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