For WD owners affected, I would suggest posting here as well:
community.wd.com/t5/External-Drives-for-Mac/All-data-gone-on-My-Book-Studio-II/t d-p/602387
and creating a support case here: westerndigital.secure.force.com
The thread above is monitored by WD people, and although they don't seem to be responding in the forum, they might PM you for more information.
Just like many have stated here, the following is of interest:
- Make and model of affected drives
- RAID mode
- Interface used (USB, FireWire 800, Thunderbolt, adapters...)
- What OS you went from before to updating to Mavericks
- The precense and version of WD RAID Manager (I found mine in Library/Application Support/WesternDigital/WDDriveManager/WD RAID Manager)
- How it happened (was it the first time drive was connected after upgrading or later - anything unusual before that?)
- Drive's format (HFS+ or whatever)
Also, I'd sure be nice if some Mac news outlet would pick this up, to prevent this from happening to more people. I've dropped emails here and there, to no avail.
Message was edited by: Jan Renell (spelling)