How to format locked USB drive?

jessearl

macrumors member
Original poster
Mar 7, 2005
89
0
I received a pen which has a USB drive in it from a drug company. Located on the USB drive are some advertising PDF files. I'd like to erase the drive so that I can use it but it stops me saying that the drive cannot be modified.

Is there something I can do to erase this drive and use it?