FakeFlashTest is a free utility tool developed by RMPrepUSB. It checks and tests the storage space of USB flash drives and SD cards to determine whether they’re fake or falsely labeled in capacity. Some of these drives claim to be larger than they actually are, and this app validates their authenticity.

Aside from checking storage capacity, FakeFlashTest also prevents corruption. It can detect counterfeit storage devices, which are sold online by unscrupulous sellers. These fake drives usually claim to have a capacity of 64 GB but actually only store around 1 GB of data. Similar tools include DriverIdentifier and Flash Drive/Card Tester.

Discover the real storage size of your drive

FakeFlashTest runs quick reads and writes tests on different parts of a storage. It thoroughly checks if it can actually store data across its full advertised size. The software is quite simple to use; just insert the flash drive into your computer's USB port, launch the app, and select "Test Empty Space." Although it may take a while, the process will reveal the true storage capacity of your flash drive.

The app offers two methods: Quick Size Test, which quickly verifies a drive’s true size and authenticity, but may delete files, so backing up is recommended. The second is Test Empty Space, which writes test files to free space, and only deletes data if the drive is fake. Both methods help identify genuine or counterfeit drives, but caution is still advised.

When it comes to performance, the app truly excels in speed, delivering results in just a few minutes instead of hours. Its accuracy is also decent. It can swiftly identify if a 64GB drive is simply a recycled 8GB chip with corrupted firmware. However, it doesn't test every byte, so there's still a possibility that it can overlook some minor defects or inconsistencies.

A must-have tool for USB users

To summarize, FakeFlashTest is a utility that excels at checking and validating whether a storage device is real or fake, specifically its marketed capacity. There are a lot of fake storage devices sold online, and this app does a wonderful job at double-checking for their authenticity. The software is fast, reliable, and overall, a valuable addition to any troubleshooting toolkit.