By Cherry / Last Updated September 26, 2021

When do you need to copy USB to USB?

USB flash drives are very popular in computer users because they are portable. As a handy little storage device, USB drive make transferring data between different computers very easy. People use it to back up their important data, or transfer data from one computer to another. However, you may still need to copy your USB drive in some situations.

Sandisk Usb

For example, when your current USB drive gets filled up and you need more space, you can clone it to another larger USB drive for an easy upgrade. Besides, when the old USB flash drive is about to fail, you can copy it to another one for data security before it totally stops working properly. Then, how to copy USB to USB drive?

Fastest way to clone USB (flash drive) to USB(flash drive)

To copy USB drive to USB drive seems like duplicating USB drive. The basic way is to copy files in Windows Explorer. Plug the two USB drives into your computer and make sure it can be detected. Open the Windows Explorer, select the files on the old USB drive, right click it and select Copy. Then, Paste them to another USB drive. This will work well. But if there are files hidden or protected by security features, or the USB drive is a bootable USB drive, simply copy is not workable.

In this case, you have to turn to the USB to USB copy software, which can create an exactly copy of your USB drive with all contents, including the hidden or protected data, or the master boot record, slack space, and any unused space. Then the free partition manager called AOMEI Partition Assistant Standard is a great choice, which works well with all Windows operating systems including Windows  11/10/8/7 and Windows XP/Vista. You can download it and have a try.

Download Freeware Win 11/10/8.1/8/7/XP
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Simple Steps to copy USB drive to USB drive

Well, how to copy USB drive to USB drive with the free AOMEI Partition Assistant Standard? First, insert your old USB drive and your new USB drive with available USB ports and make sure they can be detected by your computer. Then follow the steps as listed.

Note: All data on destination disk will be wiped out. So if there are some important data, back them up in advance.

Step 1. Install and launch AOMEI Partition Assistant Standard. Click the "All Tools" > “Disk Clone Wizard”.

Disk Copy Wizard

Step 2.It will pop out a window for you to choose the copy method, and you can choose any one according to your requirement. 

Copy Disk Quickly

★★★ The “Sector-by-Sector Copy” copies all sectors (used and not used) from the old USB drive to new USB drive.
★★★The “Clone Disk Quickly” copies only used sectors from one USB to another USB, making it possible to clone larger drive to smaller drive.

Step 3. Here you should select the source USB drive you have to copy.

Select Source Disk

Step 4. Next, choose the destination USB drive.

Choose Destination Disk

Step 5. You can edit the partitions on your new USB drive.

Edit Disk

Step 6. When you backup to the main interface, do not forget to click Apply and Proceed to submit all operations.



See? With AOMEI Partition Assistant Standard, you can copy USB to USB in the fastest way. Besides, you can use it to clone HDD, SSD, memory card and other types of hard drives in Windows computer. It also comes with many other functions: create bootable USB, repartition USB drive, wipe USB drive and many more. To enjoy more advanced features like creating Windows to Go USB drive, recovering lost partition on USB drive, converting disk between MBR and GPT without deleting partitions you can upgrade to Professional edition.