The very first thing that *everyone* should do with *any* new drive, flash, spinning, or whatever, is *repartition* and then *reformat it* (including the boot sector). To avoid any unwanted "gifts", like spyware or botware.

Doing so will also immediately make the real capacity apparent, too. No need for special software, just ordinary precautions will do.

I do it here, too. Even though that kind of malware has zero effect on my systems (Linux).

Cheers