Nemo I installed on my N9 but now because of ripartizionemento format but I can not do, unfortunately I do not have a computer with Linux, there is not any other way to be able to reformat?

So, you need to wipe out everything and re-format your device?

Follow this thread: http://talk.maemo.org/showthread.php?t=82693
First post should have all instructions, for the firmware files maybe check towards the thread end, as NaviFirm tool doesn't work anymore and your best place to find your firmware is http://www.mrcrab.net/Nokia-Product-Code.html

There are flashers available also for Windows.

P.S. Google translator sometimes really sucks