My little problem with the onboard FAKE-RAID is getting better and better. After writing an email to the tech support of the manufacturer of the controller I got this in response:

Dear Customer,
The motherboard provides the option to setup a raid array. We do not support or repair any raid arrays nor have any information about the raid functions or otherwise. Please contact a computer data retrieval professional for assistance.

WHAT THE FUCK? Even the guys who built that shit do not know how to rebuild a RAID array on that controller???

What else to expect from tech support? OK, I try it again with the tech support from the motherboard manufacturer...