I was a first day Mavericks guy who installed it within hours after it came out. I did a Clean Install.
My "Time Machine" is a WD external drive that was originally a PC disk that I reformatted to work with Mac. It worked fine, no problems, and was used to retreive files while putting my system back together -- although it was slow. It even made a few backups before I shut it down.
I have two other WD Externals: one is a PC drive that I reformatted to use on the Mac and the other is "My Passport for Mac" that was obviously a Mac disk from the factory. I never knowingly installed any WD software.
Upon reading this thread (when it was just one page long in Apple's support forum), I unplugged my Time Machine, and have been afraid to plug in my other two WD External drives out of fear that they would be wiped clean.
AKabas: I've checked ALL of the folders you and others mentioned in this thread -- several times -- and never found any WD, Western Digital, or wdc, files or sub-folders in them.
As a point of reference, I do not have a folder marked "Incompatible Software".
Question to anyone who cares to reply: Do you think I'm okay and can plug in my WD External Drives? or should I wait until Apple has a update to address this issue? I'm very uncomfortable with installing driver updates from Western Digital. First is I've never done any WD driver update on any of my drives, nor do I see a need to do so; and, secondly, if I wanted to do a driver update, how do I do that if the drive could be reformatted when I plug it in to do a driver update -- that will prevent it from being reformatted? I prefer an Apple solution rather than a WD solution.
Somewhere earlier in this thread, someone mentioned they spoke with Apple and their rep said it was not an Apple problem. I disagree. Who wrote the code that went into effect and wiped clean the drives without warning you something was about to happen. If Apple wrote that code then they are responsible. They should have put instructions into Mavericks to warn a user that a Disk or Drive reformat utility was about to wipe clean a disk, and given you the option to say no so you could eject the Disk before it was killed.
I am an APPLE Fanboy and have used their products since the Apple IIc (which I wish I still owned) and VisiCalc, and will continue to use their stuff in the future. This is a horrible problem that someone should have seen coming. But I believe that Apple must, and will, come up with a fix -- hopefully very soon. That's my 2 cents on this.