root@ubuntu:/usr/sbin# apt-get install -f
Reading package lists... Done
Building dependency tree
Reading state information... Done
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
1 not fully installed or removed.
After this operation, 0 B of additional disk space will be used.
Setting up linux-image-3.2.0-35-generic (3.2.0-35.55) ...
Running depmod.
update-initramfs: deferring update (hook will be called later)
The link /initrd.img is a dangling linkto /boot/initrd.img-3.2.0-35-generic
Examining /etc/kernel/postinst.d.
run-parts: executing /etc/kernel/postinst.d/dkms 3.2.0-35-generic /boot/vmlinuz-3.2.0-35-generic
run-parts: executing /etc/kernel/postinst.d/initramfs-tools 3.2.0-35-generic /boot/vmlinuz-3.2.0-35-generic
update-initramfs: Generating /boot/initrd.img-3.2.0-35-generic
/cow: No such file or directory
mkinitramfs: for root /cow missing /cow /sys/block/ entry
mkinitramfs: workaround is MODULES=most
mkinitramfs: Error please report the bug
update-initramfs: failed for /boot/initrd.img-3.2.0-35-generic with 1.
run-parts: /etc/kernel/postinst.d/initramfs-tools exited with return code 1
Failed to process /etc/kernel/postinst.d at /var/lib/dpkg/info/linux-image-3.2.0-35-generic.postinst line 1010.
dpkg: error processing linux-image-3.2.0-35-generic (--configure):
 subprocess installed post-installation script returned error exit status 2
Errors were encountered while processing:
 linux-image-3.2.0-35-generic
E: Sub-process /usr/bin/dpkg returned an error code (1)