Make sure "System Install Mode"(or something close to that) is not enabled in the bios. If it is enabled, it will limit the system to 256MB of ram for compatibility of some OS installations.
-----Original Message-----
From: centos-bounces@xxxxxxxxxx [mailto:centos-bounces@xxxxxxxxxx] On Behalf Of Robin Mordasiewicz
Sent: Monday, October 03, 2005 10:34 AM
To: CentOS mailing list
Subject: OS does not see all my RAM
My BIOS shows all my RAM, but when I boot up linux it does not see all the RAM
I have two one GIG sticks of RAM, which show up in my bios, but when typing free, I see that it only shows 256Megs.
Is there a way to specify the amount of RAM if linux cannot detect this, or how can I fix/tweak the OS to recognize the amount of RAM
my OS is centos-4-x86_64 on a DELL 1850
[root@smtcorav02 ~ ]# free
total used free shared buffers cached
Mem: 251360 220136 31224 0 3932 64748
-/+ buffers/cache: 151456 99904
Swap: 524280 0 524280
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