plotinus.., it is very unlikely that it is the sata card. how do you come to that conclusion?
what os are you running, perry99?
i would like to mention that i have two western digital mypassport 2,5" each 2GB from 2010 and 2013, and since i installed 10.9 they will not mount in the finder and will not show up in apple´s hard disc utility (left column) or anywhere else.
the data on the discs is not important (they are empty), so i dont have an urgent problem to solve,
but this would mean, that it is no defective SATA controller or defective usb cable/port or defective apple computer, as i tested all available usb3.0 slots of my two brand new shipped macs:
- imac 27" late 2013
- macbook air 13 mid 2013
to be on the safe side, i requested a brand new mypassport at wd, shipping in advance (warranty) and sent the "old" one back. i ve been waiting 4 days, and it was here! wd support is perfect.
the brand new is the third one, i tested now, and it behaves like the ones before, wont show up anywhere.
i did NOT install any wd driver or tool before, but i considered it to help mount the drive, so i gave it a try and installed the latest wd turbo driver for mac, the wd security app and wd disc tools... nothing happened, no mount. even wd disc tools cannot reformat the discs, it shows up in the wd disc tool app with serial number, but it cannot be mounted or dismounted, so i got an error when i tried to format it with the wd disc tool app (could not format the disc because of an unknown problem)
lets hope this will be fixed with 10.9.1, 10.9.2 or any firmware update by wd soon !
thanks