Having problems with your Dell PowerEdge 1600SC Server ?

Windows won't see all of my 4GB of RAM but BIOS does! Why?

\015 Specs:\015\012\015\012 Computer: Gateway GT5040 (new)\015\012 Motherboard: Intell d945gcz\015\012 RAM: 4 GB of RAM is installed (a 1 GB DDR2 RAM stick in each of the 4 RAM\015\012 slots)\015\012 All RAM is the same speed (533)/same brand of RAM bought/installed at once\015\012 OS: Windows Server 2003 Enterprise x64 Edition with SP1 installed\015\012\015\012Problem Description:\015\012\015\012 After installing the RAM and I look in the BIOS, it sees 4GB of ram (1024MB\015\012 x 4 sticks) - good stuff.\015\012 However, I boot into Windows and look via either winver or winmsd and it\015\012 shows: 3,397,500 kB\015\012\015\012Question:\015\012\015\012 What happened to the remaining half GB of RAM? How can I make Windows see\015\012 all 4GB?\015\012Dell 1600SC Server with 2 Intel Xeon 2400 Mhz Processors, Win2K Service Pack 4. My computer properties only 261,552KB ram informed. At booting only 264 MB RAM allowed message line on boot black screen. Is there anything I can do?\015

Answers :

Its simple you must have the system in OS install Mode, for some legacy OSs they can only install with 256 Max RAM.
\015\012
\015\012The setting is in the BIOS or setup. its easy to find and its called OS Install Mode
Dude,

system allocation needs half gb of ram dude
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