Since this week I encouter spontaneous unmounts of my MyBook essential 2TB (USB3 version) on my iMac running Lion 10.7.2.
I use this disk a year without any problems. But suddenly, i think after a wd smartware and firmware update problems started. The updates went fine, but now there seems to be some sort of problem.
p/n: wdbacw0020hbk-00
s/n: [Deleted]
please, really need help!