Help ! MacBook does not see new drive

WD External Drives WD Portable Drives
4

same here.

i cannot mount the 2 TB mypassport anymore under 10.9 mavericks.

2 weeks ago, i mounted it, it was fine. i tried 2 different macs and 6 different usb ports

is there a bug in 10.9 which collides with the WD driver?

is it damaged?

my topic:

http://community.wd.com/t5/WD-Portable-Drives/cannot-mount-mypassport-osx-10-9-mavericks/td-p/633467