I had followed the guide on installing via a USB stick perfectly and it did indeed work. However, now I'm trying to empty the USB stick so I can use it again. I followed the steps on the wikia page, but it did not work fully. I can only put about 30 images on the USB stick and nothing else. So basically, I can only use about 1 GB of space out of the 16GB that I have. I tried the step three more times, then Disc Utility and then I tried formating via Windows but I'm denied access now! So I reboot my computer and found that the USB is not unallocated! So I allocated it via Window's run command and now it can be formated, but it returns me back to the "small space" problem from before.
Did Mageia 3 ruin my USB stick?

Any and all help is greatly appreciated, thanks!
My stick is a Toshiba 16GB USB