I connected my iPhone 4S as well as my Toshiba external hard drive to my Dell Windows 7 laptop. For relatively small files I can use Ctrl-C and Ctrl-V to copy directly from the iPhone to the external hard drive. But for large video files (around 500MB) the copy hangs.
I discovered a workaround, which is to copy the file from the iPhone to the laptop's internal hard drive, then from the hard drive to the external drive, which works. How can I get the copy to work directly for these large files?