In order to erase a USB drive, some users may just delete files or format it. However, neither simple deletion nor formatting can completely erase files, because many data recovery programs can easily and quickly recover deleted or formatted files. Therefore, computer users need to be careful when discarding or selling USB drives, as a large amount of data involving personal privacy and even company secrets can be found on many recycled used flash drives.

After all kinds of information leak events, more and more people or companies began to realize the common ways to delete important data is unadvisable. Because that only removes the corresponding data's records from the File Allocation Table, while all data is still intact on the hard drive. Just because of this, many software can restore the data with ease.

As far as I can see, HD Tune Pro has been the best and most popular universal hard disk testing and diagnostic toolkit all the time. It can show you all the performance parameters of any kind of storage media, including Firmware version, Capacity, Serial number, Buffer size, SATA standard, supported UDMA mode and the supported features like read-write speed, burst rate, ...