root@xubuntu:/# sudo apt-get purge grub grub-pc grub-common && sudo apt-get install grub-common grub-pc
sudo: unable to resolve host xubuntu
Reading package lists... Done
Building dependency tree
Reading state information... Done
Package 'grub' is not installed, so not removed
The following packages will be REMOVED:
  grub-common* grub-gfxpayload-lists* grub-pc* grub-pc-bin* grub2-common*
0 upgraded, 0 newly installed, 5 to remove and 0 not upgraded.
After this operation, 9,014 kB disk space will be freed.
Do you want to continue [Y/n]?
Can not write log, openpty() failed (/dev/pts not mounted?)
(Reading database ... 182065 files and directories currently installed.)
Removing grub-gfxpayload-lists ...
Removing grub-pc ...
Purging configuration files for grub-pc ...
Removing grub2-common ...
Removing grub-pc-bin ...
Removing grub-common ...
Purging configuration files for grub-common ...
Processing triggers for man-db ...
Processing triggers for install-info ...
Processing triggers for ureadahead ...
sudo: unable to resolve host xubuntu
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following extra packages will be installed:
  grub-gfxpayload-lists grub-pc-bin grub2-common
Suggested packages:
  multiboot-doc grub-emu xorriso desktop-base
The following NEW packages will be installed:
  grub-common grub-gfxpayload-lists grub-pc grub-pc-bin grub2-common
0 upgraded, 5 newly installed, 0 to remove and 0 not upgraded.
Need to get 3,506 B/2,361 kB of archives.
After this operation, 9,014 kB of additional disk space will be used.
Do you want to continue [Y/n]?
Err http://us.archive.ubuntu.com/ubuntu/ saucy/main grub-gfxpayload-lists amd64 0.6
  Could not resolve 'us.archive.ubuntu.com'
Failed to fetch http://us.archive.ubuntu.com/ubuntu/pool/main/g/grub-gfxpayload-lists/grub-gfxpayload-lists_0.6_amd64.deb  Could not resolve 'us.archive.ubuntu.com'
E: Unable to fetch some archives, maybe run apt-get update or try with --fix-missing?
root@xubuntu:/#