I have spent the best part of the evening trying to change permisons, and delete folders after copyng them over to the the 4tb Linkstation.
For some reason after copying them over they changed permisions. I tried all the the commands in terminal and the Batchmod prog. No Good.
Downloaded Cyberduck and switched on FTP service in Web UI and after changing attributes, they deleted. You may have to retry to the read directory a couple of times (so it can rebuild) and then change attrib's, but it does work.