On Thu, 2011-04-28 at 21:52 +0200, Alexander Farber wrote: > On the 2nd try it has booted and seems to work. Did it give an error on the first try and if so, which one ? You should check /var/log/messages for i/o errors and check your disks with smartctl I have had my raid1 arrays rebuild sometime without a (for me known) reason. Even had a defective networkcard kernel panic the machine for two hours and the raids were still working afterwards ;) Regards, Michel