On Mon, 18 Feb 2008 12:44:43 -0500 Bill Davidsen <davidsen@xxxxxxx> wrote: > Looking at your mtrr output, reg5 and reg6 seem to point to the missing > memory, but it's not being used. I'm just not enough of a memory > hardware expert to quite understand what's happening. I managed to find some discussion of this issue (or one very much like it) on lkml.org. It sounds like this is a common problem on certain Intel motherboards, and it sounds like this is known to Intel as well. I guess there's no fix for it at the moment, other than feeding the kernel a mem= parameter on boot. -- MELVILLE THEATRE ~ Melville Sask ~ http://www.melvilletheatre.com