If you're running in full system partition mode, then there is nothing you should have to do to make the hardware available to the partition.
You may want to consider running diagnostics to make sure you don't have bad hardware. Make sure you run advanced diagnostics. I have seen situations were hardware passed basic diagnostics, but failed advanced diags.
You might what to check your server with ASMI too. I've written a pretty simple guide for connecting to your server with ASMI here:
http://www.pseriestech.org/forum/tut...ystem-102.html