Я должен очистить старые ядра для выпуска дискового пространства в “начальной загрузке” [дубликат]

Это - процесс, который я пытаюсь пройти, и следующее является результатами, которые я получаю:

sudo apt-get -y purge linux-headers-4.4.0-81
Reading package lists... Done
Building dependency tree       
Reading state information... Done
The following packages were automatically installed and are no longer required:
  gnustep-base-common gnustep-base-runtime gnustep-common gnustep-gui-common
  libgnustep-base1.24 libobjc4 mknfonts.tool python-suds
  qml-module-qtquick-controls qml-module-qtquick-dialogs
  qml-module-qtquick-layouts qml-module-qtquick-privatewidgets
  qml-module-qtquick-window2
Use 'sudo apt autoremove' to remove them.
The following packages will be REMOVED:
  linux-headers-4.4.0-81* linux-headers-4.4.0-81-generic*
  linux-image-extra-4.4.0-53-generic linux-image-extra-4.4.0-89-generic
0 upgraded, 0 newly installed, 4 to remove and 30 not upgraded.
3 not fully installed or removed.
After this operation, 392 MB disk space will be freed.
(Reading database ... 359836 files and directories currently installed.)
Removing linux-image-extra-4.4.0-53-generic (4.4.0-53.74) ...
run-parts: executing /etc/kernel/postinst.d/apt-auto-removal 4.4.0-53-generic /boot/vmlinuz-4.4.0-53-generic
run-parts: executing /etc/kernel/postinst.d/dkms 4.4.0-53-generic /boot/vmlinuz-4.4.0-53-generic
run-parts: executing /etc/kernel/postinst.d/initramfs-tools 4.4.0-53-generic /boot/vmlinuz-4.4.0-53-generic
update-initramfs: Generating /boot/initrd.img-4.4.0-53-generic
Warning: No support for locale: en_US.utf8

gzip: stdout: No space left on device
E: mkinitramfs failure cpio 141 gzip 1
update-initramfs: failed for /boot/initrd.img-4.4.0-53-generic with 1.
run-parts: /etc/kernel/postinst.d/initramfs-tools exited with return code 1
dpkg: error processing package linux-image-extra-4.4.0-53-generic (--remove):
 subprocess installed post-removal script returned error exit status 1
Removing linux-image-extra-4.4.0-89-generic (4.4.0-89.112) ...
run-parts: executing /etc/kernel/postinst.d/apt-auto-removal 4.4.0-89-generic /boot/vmlinuz-4.4.0-89-generic
run-parts: executing /etc/kernel/postinst.d/dkms 4.4.0-89-generic /boot/vmlinuz-4.4.0-89-generic
run-parts: executing /etc/kernel/postinst.d/initramfs-tools 4.4.0-89-generic /boot/vmlinuz-4.4.0-89-generic
update-initramfs: Generating /boot/initrd.img-4.4.0-89-generic
Warning: No support for locale: en_US.utf8

gzip: stdout: No space left on device
E: mkinitramfs failure cpio 141 gzip 1
update-initramfs: failed for /boot/initrd.img-4.4.0-89-generic with 1.
run-parts: /etc/kernel/postinst.d/initramfs-tools exited with return code 1
dpkg: error processing package linux-image-extra-4.4.0-89-generic (--remove):
 subprocess installed post-removal script returned error exit status 1
Errors were encountered while processing:
 linux-image-extra-4.4.0-53-generic
 linux-image-extra-4.4.0-89-generic
E: Sub-process /usr/bin/dpkg returned an error code (1)

что я должен сделать для заканчивания этих ошибок?