I generated a brand new (reformatted) USB Key to boot on Ubuntu.
I generated the USB Key using the internet procedure accessing it from a Windows 7 PC with Google Chrome.
I generated the USB KEY successfully.
Now I insert my USB KEY, called PENDRIVE (F:/) automatically, in my other laptop (installed on Ubuntu 8, but I can not just upgrade since the internet connection does not seem to work). Unfortunately my computer I want to re-install on the new Ubuntu has not the possibility to boot on the USB port (if I click on F12 I have 3 options: HDD, DVD, external disk), therefore it boots on Ubuntu 8. No pb, I can try to reboot after. But when I enter the USB KEY, the system detects it is a bootable key, and requests if I want it to autorun. I answer Yes, of course, and it says "
Can not find autorun.exe"
If I look in the key, there is file called wubi.exe, but it seems the system does not identify it.