[charles@localhost ~]# sudo -s -H
Password:
[root@localhost ~]# mount --bind /dev/ /media/ubuntu/dev
[root@localhost ~]# mount --bind /dev/pts /media/ubuntu/dev/pts
[root@localhost ~]# mount --bind /dev/shm /media/ubuntu/dev/shm
[root@localhost ~]# chroot /media/ubuntu
root@localhost:/# mount -t sysfs sysfs /sys
root@localhost:/# mount -t proc proc /proc