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Si vous essayer d'installer Ubuntu sur l'UMPC vous aurez surment le droit à l'erreure suivante :

This kernel requires the following features not present on the CPU:

pae



Unable to boot - please use a kernel appropriate for your CPU.

Ce message est liée au processeur, qui est un Pentium M.

Workaround 4: Ubuntu 12.04.5 and 14.04 (or later) on Pentium M only

Ubuntu 12.04.5 and 14.04 support an option ("forcepae") to enable PAE on Pentium M CPUs (where it is disabled by default). To enable it:
Boot the 32-bit Ubuntu (or Xubuntu etc.) installer
When the image of the keyboard and little man in circle appears hit the Tab key
"Choose your language" popup appears. Use the cursor keys and hit the Enter key to choose your language
Press F6, a grey menu will popup with some boot options
Press escape to close the window
You will now see a line that says:

Boot Options file=/cdrom/preseed/ubuntu.seed boot=casper initrd=/casper/initrd.lz quiet splash --

Edit this line and add the forcepae parameter with spaces twice around the -- at the end:

Boot Options file=/cdrom/preseed/ubuntu.seed boot=casper initrd=/casper/initrd.lz quiet splash forcepae -- forcepae

forcepae -- forcepae note:

forcepae is required twice because it sets the boot parameters for two different kernel boots - the kernel that runs as part of the installer (left of --), and the kernel that runs on the installed system (right of --).

The text at the end should be -- forcepae not --forcepae. There is a space between -- and forcepae

Hit the Enter key, hopefully Ubuntu will boot and the rest of your install will be successful. If you have graphical problems with Unity, or just find it slow, try a more lightweight distribution like Xubuntu.

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