I just purchased a late 13'' rMBP and I can't get the Toshiba external drive to work on it. I've checked the External disks option on Finder's preferences tab, but it's not being recognized... I've plugged it in & out several times, tried both USB ports, but it STILL doesn't show up on Disk Utility The blue light on the drive does come on however. It connects to a Windows laptop with no problem, and I even tried changing the format of it to FAT32. Googling didn't help much... saw that a lot of people were having a problem getting their HD to recognize after some OS updates, but couldn't find a solution. anyone know how to fix this??