Samsung BD-H8500 copy from pc to hdd

[xfred343]

Hello,

the BD-H8500 has a built in 500 GB hdd. I have set network - content sharing - share hard drive to yes.
I can see the structure of hdd in media player but it is not possible to copy files from pc to BD-H8500.

Is this possible to retrieve the built in hdd and to copy files (.avi or something like that) to the built-in hdd? What's my mistake.

Thanks a lot