Do you have some suggestions or maybe someone know something more about this problem? Like I have said before. when I have booted the microserver for the first time and the hard drive was recognized (the only time) what could be that strange message: "ATA security state of this disk is invalid" ? Someone who has his drive recognized can gently confirm me that he sees the same message during boot on his hard drive? from what I know is a security feature used most on laptop but for sure it was not enable on my WD GOLD. The drive was perfectly new, never used and sealed on his antistatic cover.