I hope this is in the right place to ask this question. I have an external hard drive 250 GB that I reformatted and partitioned so I could use 150 gig on a Mac and the rest on a PC (NTSF). I was trying to transfer some very large movie files onto the mac portion of my external hard drive from a mac computer, and it worked fine for a while, but then a screen popped up that told me I didn't have any space left when I know I did. I tried deleting about 10 gigs and when I looked it still had the same amount of space listed, like I hadn't deleted anything. It's not a matter of file size, as I successfully transferred a 60 GB file. I need help! I might be able to poke around and figure something out if I was on a PC, but I'm not a Mac user except at school, where we use only Macs. They confuse me to be honest, so your help would be appreciated.