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I have a core i3 PC, which had only 2GB RAM earlier. Today I bought a 4GB RAM and installed in the PC. But now it showing only 3.2*GB RAM in the O/S, which means about only 4GB and not showing about 2GB RAM when I ran "free -m" command.
I checked in the BIOS and found it is showing about both and showing total memory as 6GB. I am using ubuntu 11.04.
Should I reinstall the O/S to brings up the RAM capacity to 6GB?
I also checked it with "cat /proc/meminfo" command and found MemTotal for only 3.2 something GB. Why it is not showing completely 4GB and why it is not showing other one i.e 2GB?
The swap was not given double of the RAM(4GB) while installing O/S and I had given 10GB as swap even I had only 2GB at that time. So the swap is making anything wrong?
Please help me, how to brings up the total memory as 6GB without reinstalling the O/S.
Last edited by roopakl; 11-24-2011 at 12:24 PM.
Ubuntu 32bits will not show more than that I'm not sure how to work around with it besides recompile a custom kernel so you activate 'High Memory Support', now if you don't want go through that, then just install the 64bit version and it will read all your RAM.
then just install the 64bit version and it will read all your RAM.
Thanks for your kind reply.
Is it possible to install 64bit O/S using "apt-get install" command without affecting my existing data and the servers(squid proxy, dns, dhcp etc), if yes, could you please show me the full command with 64bit name to install it. Because I dont want to go with a fresh install and reinstall/reconfigure all other.
Last edited by roopakl; 11-24-2011 at 09:43 PM.
PAE stand for physical-address-extension......
This should work let's hope you don't have to install 64bit version
Thanks for your kind reply.
There are many, but I didn't find that which line is having word called kernel and the package name for headers and confused in which one I have to. So please find the package manager snapshots and let me know that which are the packages I should install.