Instalando o xen

# aptitude install xen-hypervisor xen-linux-system xen-utils xenstore-utils xenwatch xen-tools
# echo "(network-script network-bridge)" >> /etc/xen/xend-config.sxp
# dpkg-divert --divert /etc/grub.d/08_linux_xen --rename /etc/grub.d/20_linux_xen
# update-grub
# reboot

Criando VM

# mkdir -p /vm
# xen-create-image --dir /vm --gateway 192.168.241.2 --nameserver=192.168.241.4 --netmask=255.255.255.0 --password=UMASENHAPRAVM --hostname=SEUHOSTNAME --ip=192.168.241.SEUIP