Dica de Fernando Ferraz:
-link da distro lubuntu (x86)
http://cdimage.ubuntu.com/lubuntu/releases/13.04/release/lubuntu-13.04-desktop-i386.iso
- criando imagem do qemu
qemu-img create lubuntu-13.04-desktop-i386.iso -f qcow 10G
- carregando install CD do lubuntu
qemu-system-i386 -hda
~/UNICAMP/MO806I/qemu-images/lubuntu-13.04-desktop-i386.iso -boot d -cdrom
./lubuntu-13.04-desktop-i386.iso -m 512
- carregando lubuntu instalado no disco virtual
qemu-system-i386 -hda
~/UNICAMP/MO806I/qemu-images/lubuntu-13.04-desktop-i386.iso -m 512