HOWTO : Use more than 3GB RAM on Ubuntu 9.10 Desktop

If you have more than 3GB RAM on your 32-bit system, you can install PAE kernel of Ubuntu 9.10.

Step 1 :

You need to install Ubuntu 9.10 i386 as usual. Then,

sudo apt-get update
sudo apt-get upgrade

*If kernel is updated, please reboot and then go for further steps.

Step 2 :

sudo apt-get install linux-generic-pae
sudo apt-get install linux-image-generic-pae linux-headers-generic-pae

Step 3 :

Reboot to the new kernel - with "pae" extension.

After boot up, issue the following command to make sure you are in the PAE kernel.

uname -r

The output may look like this :

2.6.31-14-generic-pae

Step 4 :

sudo apt-get remove linux-generic
sudo apt-get remove linux-image-generic linux-headers-generic
sudo apt-get remove linux-image-`uname -r | grep "pae" | cut -d- -f1,2,3 | cut -c 1-`
sudo apt-get remove linux-headers-`uname -r | grep "pae" | cut -d- -f1,2,3 | cut -c 1-`

You may also need to do the following step.

sudo update-initramfs -u
sudo update-grub2

Step 5 :

Reboot your system.

That's all! See you.