когда я использую sudo apt-get remove / install, reply is Error

Я использую Ubuntu 12.04 LTS, и всякий раз, когда я использую:

sudo apt-get remove
sudo apt-get install

, он отвечает:

cp: failed to extend `/boot/initrd.img-3.5.0-47-generic.dpkg-bak': No space left on device
dpkg: error processing initramfs-tools (--configure):
 subprocess installed post-installation script returned error exit status 1
Errors were encountered while processing:
 initramfs-tools
E: Sub-process /usr/bin/dpkg returned an error code (1)

Правильно ли это?

установка / снятие?

ответ для:

sudo apt-get install -f 

есть:

Reading package lists... Done
Building dependency tree       
Reading state information... Done
0 upgraded, 0 newly installed, 0 to remove and 1 not upgraded.
1 not fully installed or removed.
After this operation, 0 B of additional disk space will be used.
Setting up initramfs-tools (0.99ubuntu13.4) ...
update-initramfs: deferring update (trigger activated)
Processing triggers for initramfs-tools ...
ln: failed to create hard link `/boot/initrd.img-3.5.0-47-generic.dpkg-bak' => `/boot/initrd.img-3.5.0-47-generic': Operation not permitted
cp: writing `/boot/initrd.img-3.5.0-47-generic.dpkg-bak': No space left on device
cp: failed to extend `/boot/initrd.img-3.5.0-47-generic.dpkg-bak': No space left on device
dpkg: error processing initramfs-tools (--configure):
 subprocess installed post-installation script returned error exit status 1
Errors were encountered while processing:
 initramfs-tools
E: Sub-process /usr/bin/dpkg returned an error code (1)