Hi Benjamin, >> I am trying to add a 3Ware 9500S-8 RAID controller to a CentOS 5.4 box. >> >> I have the drivers from 3Ware and they seem to be a .ko file (which I presume is like a .kext on OSX) >Have you tried it without installing the vendor driver? That board >should be old enough to be supported natively. I use 9550SX boards >without any problems. Can you tell me the process you take? I dont see drives available, I believe they are being exported to the OS though. I took my 8x1.5tb drives, went into the card setup and set each one as a single drive and when the machine boots, the card says they are exported. What can I try to ensure that CentOS is seeing them? -Jason