I have been struggling for a while to mount my WD Harddrive on Mac before I found this command line method to do this. Thanks to the author.
Similarly to copy using command line is prescribed here. Though not tested yet 😦
Another method that I found recently to use NTFS formatted external drive with Mac is to use MAC-Fuse which allows you to run NTFS drivers in MAC without modifying actual kernel. You can refer to this link for detailed procedure.