This is the process that saying how to install a fake pae
Make a USB stick for installation using the non-PAE 12.04 mini ISO. If your machine does not support boot from USB you have to burn a CD in stead.
Remember to have wired internet access during the entire process.
When the installation is finished reboot the computer.
The command
cat /proc/cpuinfo
does not show pae in the flags line for the processor. This is what we would like to change.
2
Run
sudo apt-get install python-software-properties
and after that
sudo apt-add-repository ppa:prof7bit/fake-pae
You will see a screen explaining about the PPA you are about to add. Just accept the text.
Now
sudo apt-get update
and
sudo apt-get install fake-pae
installs the fake-pae package.
Verify that
cat /proc/cpuinfo
now shows the pae flag.
In order to clean up unneeded files and save (a little) space run
sudo apt-get clean
3
If one now runs
sudo do-release-upgrade
in order to upgrade to 12.10 nothing happens, as 12.04 is a long term support release, and by default it only allows upgrades to another long term support release (regardless of PAE/non-PAE support). This must be changed before proceeding.
Executing
cd /etc/update-manager/
and
less release-upgrades
shows Prompt=lts at the bottom of release-upgrades. This must be changed to Prompt=normal.
After taking a back up with
sudo cp release-upgrades release-upgrades.backup
and executing
sudo sed -i s/Prompt=lts/Prompt=normal/ release-upgrades
the file is changed, as can be seen with another
less release-upgrades
4
Now
sudo do-release-upgrade
performs the upgrade to 12.10. You might be informed that sources.list will be changed, which is all right.
After the upgrade is completed reboot the computer and run
uname -a
which shows that the kernel is now 3.5.x
5
A second
sudo apt-get clean
sudo apt-get update
sudo do-release-upgrade
brings the system to 13.04. You might see a number of apparent errors during the upgrade, but wait a moment before considering it a failure.
After a reboot you could be greeted by a message saying that 13.04 is available, though you have just upgraded to 13.04. It’s only a minor bug - when in doubt, as always try
uname -a
A kernel of 3.8.x indicates a successful upgrade to 13.04.
cat /proc/cpuinfo
and similar tools still show the fake pae flag.
6
Repeat step 5 to get to 13.10.
After a reboot
sudo apt-get update
sudo apt-get clean
sudo apt-get autoremove
is run in order to save a little space.
7
Now the desktop environment can be installed. The command
sudo apt-get install lubuntu-desktop
gives the full installation, but often it’s better to begin with the smallest selection of packages like
sudo apt-get install --no-install-recommends ubuntu-core