Bug#680084: os-prober: postinst script gets stuck
> Maybe some information about the disk layout helps, too:
> /dev/sda is the only disk installed.
> /dev/sda1 /boot ext4
> /dev/sda2 encrypted physical volume for lvm2:
> /dev/mapper/pv00 physical volume
> /dev/mapper/vg00-root / filesystem ext4
> /dev/mapper/vg00-swap swap
> /dev/mapper/vg00-root2 empty ext4
> /dev/mapper/vg00-export empty ext4
Is this the contents of your /etc/fstab? If so, using "empty" as the
mount point could be part of the problem. If this is the case, could
you try changing "empty" to a real mount point?