I have a Dell Adaptec 2610SA 6 port SATA RAID PCI card with 3 hard drives on it and everything works fine.
I plugged another hard drive to it and the system (Ubuntu 12.04, 64 bit) seems not to recognize it.
Strange thing is that, as happened in the past, if I re-install the system, it recognizes the new hardware plugged to RAID card.
Of course I don't want to re-install ubuntu each time I plug a new hard drive on my RAID card. Any idea? Thank you in advance