[CentOS] hp dl585 - qlogic hba's - centos 4.5 x86_64

Hi

I recently installed some hba's into a bunch of these 585's as they are 
forming a RAC cluster - previously to this they were all using DAS 
without issue.

After the qlogic cards were installed i reinstalled the OS and now once 
installed the OS will not boot - the box just reboots continuously, it 
does not even appear to get to grud, although this could be the ilo not 
displaying correctly.

I have installed the OS onto the internal RAID set as usual and the MBA 
gets put onto this internal RAID disk also, the internal disks are just 
laid out in a /boot and a /

Does anyone know what the issue could be or how i could disable these 
hba's during the install process so that they are not recognised?

thanks