I try to install 5.6 and 6.0b3 on a server with mylex DAC. On the install it sees the controller but does not continue the install . 5.5 install without any problem and will not upgrade to 5.6 after either. I have an identical server that did install after several times . Any drivers that I could change to make it work.
I read that redhat needs a kernel fix to make it work