USB drive showing different sizes on diffent systems?

Minhaz Ali

Honorable
Mar 15, 2013
79
0
10,630
I have a 16gig(actually 14.5gig) harddrive and i have two movies in it. When i put the usb drive into my pc, it shows that i have 11.5 gigs of free space left. BUT when i insert my usb drive into my jadoo box(i bought this box, connected to the tv. you can watch videos through USB) it shows 9.5 gig free space. Whats wrong? Which one is accurate?