What is happening:
I have a PC running Windows 8.1 and a Mac running Mac OS X 10.6.2. I also have a USB which is 8GB. My Mac isn't connected to the internet but my PC is. When I connect my USB to my Windows Machine it works as usual. It shows it's formatted as FAT32. However when I insert it to my Mac it doesn't show as a device but in Disk Utility it shows that it isn't mounted:
When I try to mount the drive it says that I need to run First Aid on it. But nothing different happens.
I was wandering if there was a way to open Mac OS extended/HFS/HFS+ USBs on Windows. This is the only way my Mac reads it.