USB Flash Drive Tester

As the name implies, USB Flash Drive Tester is a software application that allows you to test the integrity of your removable devices (e.g. SD cards, USB flash drives), in order to detect bad or unstable sectors, as well as fake sizes.
After a brief installation procedure that does not require special input from the user, you are greeted by a regular window with a well-defined layout, representing USB Flash Drive Tester's interface.
From a drop-down list you can select one of the plugged-in drives or cards, and pick one of the tests supplied by the utility.
Therefore, you can perform a read, write, or read, write and compare test. It is also possible to make the app record all log activity to an external file with the LOG format.
Logging details revolve around the drive or card size, error count (both fatal and recoverable), test start and end time, and other information. You may also check out a graphical representation of this benchmark's results to identify good and bad sectors, as well as view the map legend (e.g. untested, good, fatal read errors, block size).
USB Flash Drive Tester barely uses CPU and system memory, so it does not interfere with the runtime of other active processes. It has a good response time and finishes a test rapidly, without hanging, crashing or popping up error dialogs; we haven't experienced any issues throughout our evaluation.
All in all, USB Flash Drive Tester is a very useful piece of software for all individuals who want to keep a close eye on the status of their drives and cards.