Top 6 Tools To Detect Fake USB Flash Drives, and SD Cards

Published on 8 September 2020 at 10:56

There are many fake capacity USB flash drives on the market that claim a particular capacity, but only delivery somewhat less than this (particularly the larger drives).

This is sometimes refered to as fake ‘oversize capacity’. The counterfeit drives we have examined appear to have the stated capacity in Windows Properties and it is not until you test the drive with these software that you see that there is significantly less real space.

There is also a similar problem of low quality drives (which may or may not also be counterfeit). These drives might have the capacity they state on the box, but be of such low quality that they corrupt files or lose data stored on them due to bad sector.

While many stores, such as Ebay and other online auctions, provide information on how to detect some of these fake USB flash drives, they generally rely on physical markings on the drive, such as incorrect serial numbers or typing mistakes on the packaging.

Of course this only works for well known documented cases of counterfeit SSD drives, Flash Drive, SD Cards and etc.

To avoid being cheated, ask the seller to run through their Flash Drive with one of these software and have the report emailed back to you. This will be a legal document in the event that he or she willingly sold you a fake product that doesn’t match the description.

Here are some software that enables you to test the true capacity of your microSD Cards by SanDisk, Samsung, Lexar, Transcend, Kingston, Toshiba, Sony, Western Digital, ADATA and more.

SD Card formatter is the software that helps you to format your SD, SDXC, SDHC, and many format cards. You can use this SD formatter to format your USB drive or external hard disk drive. So, the concept behind downloading the SD card formatter is.

You can format your SD card for your use. Also, you can buy any memory card and format it with the help of an SD formatter. After that, you can check your SD or Drive size with the help of a PC.

If size decreases as compared to when you buy then please be sure your SD card or drive is fake.

Check Flash is a tool for testing and formatting flash-drives. It can be used to clean any evidence of activity on your flash drive by formatting it.With Check Flash you will be able to manage your flash drives by performing different maintenance tests on it.

Except surface testing, allows check speed of reading and writing, edit partition info, save and restore full drive and partition images, save and restore MBR.

Also can perform full drive or partition cleaning. Process speed is highest what given device can provide, no more fast full test can be found in the world.

RMPrepUSB’s “Quick Size Test” feature checks the drive capacity in just a few minutes by writing and reading to certain blocks.

This test will DESTROY any files on your USB drive and is not a thorough test, if it passes then use H2TESTW for a thorough test (which can take many hours!)

4. H2testw

H2testw 1.4 is the software victims of flash memory fraud use to test the real capacity of flash memory storage chips.

Wise resellers use it to ensure inventory purchased is not for fakes before they list mp players, usb flash drives or memory cards on the internet to sell. H2testw 1.4 operates in English and German, it is a free software to download and use.

How can you tell what the true capacity for a flash memory storage chip is, is it the operating systems report? The answer is NO ! This is the classic mistake people make.

An operating system only retrieves information about flash memory storage from the usb controller chip and if it is a digitally altered one, it has been reprogrammed to lie!

H2testw 1.4 catches the lie, it tells you the truth about the real capacity of the flash memory chip. It also spots grade C and D flash memory chips, ones that should have been destroyed.

FakeFlashTest is a program to verify the real capacity of SD memory cards and flash drive media. The tool verifies the actual capacity of the disk by writing blocks of data with a size corresponding to the declared capacity of the media.

The application was created to identify false data storage media that appear more frequently on Internet auctions unscrupulous traders. Carriers having a capacity of eg. 64 GB in fact offer a record of up to 1 GB of data.

Displaying inaccurate information regarding the system disk capacity is the result of a suitable memory mapping.

FakeFlashTest during the review process overwrites all data carriers. Before starting the process to verify the capacity of the selected drive or SD card, please make a copy of all stored files.

MediaTester can test any media (SD, microSD, thumb, etc) and verify it stores the expected number of bytes. The testing method is similar to h2testw but MediaTester can detect fake or defective media much faster by performing quick reads as data is written.

If you buy any storage media, you should use MediaTester to verify it or risk losing your data. Fake media sales have reached epidemic proportions. Fake media is being falsely labled with popular brand names including SanDisk, Samsung, Sony, Kingston, and others.

Not only are these counterfeit but they often contain less storage than the cards report to the computer. A 128GB SD card may actually contain only 8GB or 4GB of actual space. After filling up all of the real space, the card will respond as if it is storing the data but it is actually throwing it away.

The files will look like they exist but they are actually full of null bytes or completely corrupted. If you try to read the data you will find that it is ALL GONE.


Above listed top 6 Tools to detect either your USB flash drives or SD cards is fake or genuine. You can check your SD memory card or flash drives or hard disk with the help of above mentioned tool. You can check SD card formatter first because, this is really user friendly tool.

You don't need to be a technical specialist to check with the help of SD card formatter. Visit mention website to download SD formatter tool.



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