When I make any data transfer process (from computer to usb), after a couple of seconds file transfer process freezes. It be normal after a few minutes later but again freezes. If there would no problem, copy process will be fast. Unlikely my hard-disk works without any problem. Also Flash-disk hasn't got any problem. -I disgust to say that- USB works fine in other OSes.
Note: I am using 3.0 port and 3.0 USB-Driver. I have no 2.0 port on my laptop.
Actually it was not freezing or hanging, it just filled up the cache (that is why it was faster at some point and suddenly looks like freezing.)
To make sure the copying running. You can do strace to see if system call I/O is running.
Open terminal, then ps -ef|grep <name_of_the_program> and then strace -p <prog_pid>.
This is a Disk Management issue. To stop a USB hard drive from freezing while copying data, you have to disable the default "Quick removal" and check the "Better performance" property in the Disk Management. This enables the "write caching", and in order to remove the drive without losing data, you must use the "Safely Remove Hardware" notification icon to disconnect the device safely.
