How to install Kernel PAE (Ubuntu)

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How to install Kernel PAE (Ubuntu)

(PAE) stand for Physical Address Extension. It's a feature of x86 and x86-64 processors that allows more than 4 Gigabytes of physical memory to be used in 32-bit systems.

Without PAE kernel, you should see something as follows:

root@penreturns:~$ free -m

Sample output:

To enable PAE, open terminal and type the following command:

root@penreturns:~$ sudo apt-get install linux-headers-server linux-image-server linux-server

Reboot your machine.

Now check again :

root@penreturns:~$ free -m

Sample output:

Enjoy!

*copy code without root@penreturns:~$

How to upgrade to kernel 3.3.0-999-generic-pae (Ubuntu) 11.10

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How to upgrade to kernel 3.3.0-999-generic-pae (Ubuntu) 11.10

Using terminal, type the following code :

For i386

root@penreturns:~$ mkdir kernel

root@penreturns:~$ cd kernel

root@penreturns:~$ wget http://kernel.ubuntu.com/~kernel-ppa/mainline/daily/current/linux-headers-3.3.0-999-generic-pae_3.3.0-999.201202190405_i386.deb

root@penreturns:~$ wget http://kernel.ubuntu.com/~kernel-ppa/mainline/daily/current/linux-headers-3.3.0-999_3.3.0-999.201202190405_all.deb

root@penreturns:~$ wget http://kernel.ubuntu.com/~kernel-ppa/mainline/daily/current/linux-image-3.3.0-999-generic-pae_3.3.0-999.201202190405_i386.deb

Installation

root@penreturns:~$ sudo dpkg -i linux-headers-3.3.0-999-generic-pae_3.3.0-999.201202190405_i386.deb linux-headers-3.3.0-999_3.3.0-999.201202190405_all.deb linux-image-3.3.0-999-generic-pae_3.3.0-999.201202190405_i386.deb

Check your bootloader if the newly installed Ubuntu 11.10 kernel is the default one, for grub check the file /boot/grub/menu.lst or if you run grub2 check /boot/grub/grub.cfg

Reboot and enjoy your newly installed Ubuntu 11.10 kernel.

Enjoy!

*copy code without root@penreturns:~$