xubuntu errors no force

w1z@w1z:~$ sudo apt-get upgrade
Reading package lists... Done
Building dependency tree
Reading state information... Done
Calculating upgrade... Done
The following packages will be upgraded:
  libssl-dev libssl-doc libssl1.0.0 openssl
4 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
Need to get 0 B/3,347 kB of archives.
After this operation, 2,048 B of additional disk space will be used.
Do you want to continue? [Y/n] y
Preconfiguring packages ...
dpkg: unrecoverable fatal error, aborting:
 reading files list for package 'xubuntu-default-settings': Input/output error
E: Sub-process /usr/bin/dpkg returned an error code (2)