why can't I transfer directly from PC to PC using usb?
USB stick? probably formatted FAT32 which can't handle files bigger than 4G may be your external drive is aswell
To convert your drives to NTFS: Right click on 'my computer' and select 'manage' From the computer management window, expand storage and select 'disk management.' Using the 'file system' column of the upper pane of this window, you can easily check what file system each of your logical drives is using. Make a note of this information. Now open a command prompt window by going to 'start\run' and typing 'cmd' To convert a disk to NTFS, type 'convert (drive letter): /fs:ntfs' So for example, if you were going to convert your D: drive, you would type 'Convert D: /fs:ntfs' at the prompt.