My WD My Book external hard drive, formatted as ExFAT, is no longer showing up as a drive in OSX Maverick. It was working last night and for the last few weeks, but not this morning. Not even Disk Utility or Disk Warrior can see it.
However, when I plug it in (via USB) to my Windows 7 computer, the drive shows up and is accessible. The data is still present.
I never installed WD drivers, just using the USB connection.
Anyone else? Thanks for any ideas.