I have a desktop system with two disks; Kubuntu is installed on one of them, windows 7 on the other.
Like I used to do, I have created a bootable usb in order to replace Kubuntu with Ubuntu (11.10) but, when I reboot my system, the bootable usb drive is not considered at all by Grub2. I tried to use different sw like unetbootin and so on (as suggested by many forums) but nothing changes. I also installed grub on removable disk (as suggested by many forums) but it's always the same. I just wanted to remove Kubuntu and put on Ubuntu.
Sorry for my newbieness.