On Mon, 2014-09-08 at 13:52 -0400, Bob Metelsky wrote: > Hi I have a dell 770 > bios sees 8g Is this a PowerVault 770? Accoding to http://www.dell.com/downloads/emea/products/pvaul/77XN.pdf It does support only 3GB of Ram. Can you please post a complete output of dmidecode. It may very well be a case where the on-board chipset is limited to 4GB address space minus the PCI addres space that leaves only 3 - 3.5GB ofg Ram space