I just did a reinstall using virtualbox again, in order to take a look at the mountpoints during the installation fail. My partitions are : /dev/sda1 ------> /boot with ext4 /dev/sda2 ------> / with ext4 /dev/sda3 ------> swap the output of df -h during the fail is: tmpfs /dev /dev/sda2 /target /dev/sda1 /target/boot /dev/sda2 /target/.static/dev tmpfs /target/dev