Preparing to unpack .../libsdl-ttf2.0-0_2.0.11-3_amd64.deb ...
Unpacking libsdl-ttf2.0-0:amd64 (2.0.11-3) ...
Selecting previously unselected package linux-image-3.13.0-38-generic.
Preparing to unpack .../linux-image-3.13.0-38-generic_3.13.0-38.65_amd64.deb ...
Examining /etc/kernel/preinst.d/
run-parts: executing /etc/kernel/preinst.d/intel-microcode 3.13.0-38-generic /boot/vmlinuz-3.13.0-38-generic
Done.
Unpacking linux-image-3.13.0-38-generic (3.13.0-38.65) ...
dpkg: error processing archive /var/cache/apt/archives/linux-image-3.13.0-38-generic_3.13.0-38.65_amd64.deb (--unpack):
 unable to clean up mess surrounding `./boot/vmlinuz-3.13.0-38-generic' before installing another version: Read-only file system