"the pc can't even see the drive, never mind tell me what space is on it."
So your computer doesn't know it's there?
But you're going through all the options?
Please be more specific.
You also said it took several attempts before allowing.
That means that there may be something physically wrong with the USB.
For example, I bought a USB a while ago for Xbox360 modding. Being as the ports on the system are such awkwardly shaped I resorted to using clamps to grab the USB and remove it from the system. I ended up damaging the USB, and I've been having problems ever since.
Has ANYTHING similar happened while using the USB?
Also, since you never said there were problems reading the USB on the other computer, format the USB and then try again to put the files on.
Start, My Computer, [Right click] which ever drive the USB is, Format.
Then simply go through the whole formatting process, put the files on again, remove safely, then try it again on your computer and post here the updates of what has happened.
Edited by Legend Gaming, 03 September 2011 - 06:04 AM.