I was trying to transfer some files to a friend's Mac with my flash drive and it said I needed to format it for some reason so I did, and now the flash drive isn't even recognized on my PC! ( Windows 7 ) How do I fix this? I've been searching for 2 hours now trying to get this to work but there is no help anywhere on the internet for this topic. I just need to figure out how to format the flash drive back to windows format instead of the mac format. Each time I click on the mac disk utility to format as FAT it always ends up going back to Mac Os Extended. Is there any way I can get my PC to detect the flash drive so I can format it with my PC, or is there any way to format it in Mac that works with PC also?