Ubuntuのパッケージをインストールする時、新しいカーネルが必要となるエラーが出てきて、 update-initramfs: Generating /boot/initrd.img-4.4.0-104-generic gzip: stdout: No space left on device E: mkinitramfs failure cpio 141 gzip 1 update-initramfs: failed for /boot/initrd.img-4.4.0-104-generic with 1. run-parts: /etc/kernel/postinst.d/initramfs-tools exited with return code 1 dpkg: error processing package linux-image-extra-4.4.0-104-generic (–configure): subprocess installed post-installation script returned error exit status 1 dpkg: dependency problems prevent configuration of linux-image-generic: linux-image-generic depends on linux-image-extra-4.4.0-104-generic; however: Package linux-image-extra-4.4.0-104-generic is not configured yet. dpkg: error processing package linux-image-generic …