steye wrote:
or maybe if theres a page somewhere that has an summary of all solutions.
This isn't the only thread covering data loss on 10.9, so I doubt there is any summary - this site isn't designed to do summaries, you are welcome to start one if you like. It will need to be away from this site since Apple & the moderators will delete anything considered off topic etc. The Terms & Conditions probably don't allow you to do this anyway!
steye wrote:
1. configurating my computer in such a way so that I can connect my harddisks again without running the risk to loose all their data.
2. which recovery software gets best results.
3. Wether there is any initiative to let apple and/or WD know that they can't let this happen ever again.
1. You cannot defy the laws of physics - all hardware will all fail (at some point) back up your data (multiple copies, multiple locations, multiple storage media). I would hope there is one lesson everybody learned from this - don't install 3rd party disk drivers or 3rd party disk 'configuration' tools on OS X.
2. No idea, create the issue summary & then test all the tools & let us know - (it's not as simple as you make it sound).
3. Apple & WD are companies, if they keep destroying users data they will lose business, I think they already know that this is a bad thing!