What are you talking about? It's just a memory card. Plug it in, click on it, enjoy film. I use my Go Pro on both PC and Mac all the time and I have no idea what this formatting is that you speak of. All the computer is doing is reading the card like the camera is a thumb drive.
"For me, my family, my friends and skiing, that is for me. That's my life. The joy I get from skiing... that's worth dying for." - CR Johnson