04-18-2010 09:16 AM - edited 04-18-2010 07:14 PM
This article gives a detailed explanation on configuring Linux to recognize memory till 64GB.It should work for most of the distros since all of them share the same kernel code
05-11-2010 04:22 AM
The article is from 2007... Nowadays most distributions will come in both 64bit or 32-bit+PAE kernel versions. So no matter what you use, you can access all of your ram (as long as your hardware is capable of doing so).
The 4GB 32-bit barrier is just a Windows thing since Microsoft refuses to enable PAE in their consumer OS'es.