I recently purchased a refurbished iMac Retina 5K running Yosemite (10.10.3). I purchased a new external hard drive to store royalty free images that I purchase online for my graphic design business. I have not been able to download directly to the external hard drive. I can download to my desktop and copy the files over just fine, but I am hoping to streamline the process a bit. I have checked (GET INFO), and the external hard drive (Toshiba 2.0 TB) shows that I am able to read and write to the drive. I just can't download direct to it. I installed the Mac Drive that came with the hard drive, if that helps at all. Is there a way to do this? Thank you!