I recently spent a whole bunch of time banging my head against a wall trying to get Fedora Core 5 installed on some Compaq Proliant DL360 machines I have. Core 4 installs fine, but Core 5 has a problem with the hardware RAID on these machines. The installer fails to identify the driver (cpqarray) successfully, and if selected manually, it finds it but fails to find any hard drives attached.
After quite a bit of searching, I found a posting at the Fedora Forum describing the fix. The trick is to boot the installer with:
linux noprobe noapic noapci
Once the installer fails to find the hard drive, select ‘cpqarray’ and ‘sym53c8xx’ drivers. After that, the install will complete successfully. All credit to this fix goes to ‘Mesu’ from Fedora Forums.