Como Formatear Una Memoria Usb En Mac

Here's what happens. I start to download it. It begins, and downloads a certain amount (sometimes a few MG, sometimes a few dozen MG) and then it always stops, "Failed - network error." I click on it to resume. It starts again. It downloads a few more MG, and then gets stuck again, "Failed- network error." Typically I get to about 200MG doing this.