<div> I also have a A8V MB. The manual explains that the mother board uses some memory address space so you can't use all 4 GB. </div> <div> </div> <div> </div> <div>On 12/6/05, tweeks <<a href="mailto:tweeks@rackspace.com">tweeks@rackspace.com</a>> wrote: <blockquote class="gmail_quote" style="PADDING-LEFT: 1ex; MARGIN: 0px 0px 0px 0.8ex; BORDER-LEFT: #ccc 1px solid">Hey Guys.. Disclaimer: I've googled the list... and didn't see anything... I've got a guy running an Asus A8V Deluxe w/Ath64 3000+ and 4 sticks of 1GB and his setup (with either RH-EL3 64bit or RH-EL4 64bit) seems to be exhibiting the classic x86/32bit problem of not being able to map the memory around the 512MB PCI memory/chipset mapping. I'm not sure about the 2.4 kernel, but I would think that the 2.6 64bit kernel (or the motherboard) could map that memory high (beyond the 32 bit range) to access all 4GB, but nothing stands out on how I should go about doing this (BIOS seems void of any such "settings", and I know of no OS/kernel (sysctl) parameters that can do this). And no.. Running PAE is NOT desireable.. This is a 64bit system.. why can't I either map-high, or around the PCI hardware limitation?! (and NO.. I don't want to add another 1GB to "get around it"). This guys wants 4GB.. Not pay for 5 get 4.5. Am I missing something here... or is this system simply NOT going to be able to get to that last PCI mapped 512MB? Anyone? Tweeks -- amd64-list mailing list <a href="mailto:amd64-list@redhat.com">amd64-list@redhat.com</a> <a href="https://www.redhat.com/mailman/listinfo/amd64-list">https://www.redhat.com/mailman/listinfo/amd64-list </a> </blockquote></div> -- My new primary mail account has changed to <a href="mailto:timothy.leblanc@gmail.com">timothy.leblanc@gmail.com</a> Please make any necessary changes to your address book.