Memory upgrade on 520 with LPAR

[Pete Helgren <Pete@xxxxxxxxxx>]

I am adding some memory to a 520 (adding 8GB) and after Shannon's post 
last week, I think the actual physical replacement of the existing 2GB 
will be the easy part.  What I want to do is add 6GB to the production 
LPAR and 2GB to the Linux partition.

I know how to change the allocations using the HMC by going into the 
partition profile but when do I do this?  After I install the DIMM? 
After the system IPL's?  Seems to me that the HMC won't see the 
additional 8GB until I power the 520 on and IPL.  So do I IPL and then 
change the partition profile?

Just need a pointer or two.  Or, if you can point me in the right 
direction in a manual somewhere I'd appreciate it.  The System builder 
has great diagrams, I just need to know the proper procedure to get the 
HMC to see the new memory so I can allocate it to the partitions.

Thanks